US Patent Class 313
ELECTRIC LAMP AND DISCHARGE DEVICES




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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  PLURAL UNIT
2.1  DF  .~ Cathode ray tube
3  DF  .~ Inter-electrode connection
5  DF  .~ Control electrode unit
6  DF  .~.~ Plural control electrode units
7  DF  WITH EVACUATING PUMP
8  DF  ARC AND SEPARATE INCANDESCENT BODY
9  DF  FILAMENT AND SEPARATE INCANDESCENT BODY
10  DF  WITH TEMPERATURE INDICATOR
11  DF  WITH TEMPERATURE MODIFIER
11.5  DF  .~ Spark plug type
12  DF  .~ Recirculating systems
13  DF  .~ Having control means for the temperature modifier
14  DF  .~ Pyroelectric type device
15  DF  .~ Electric heater
16  DF  .~.~ For liquid electrode
17  DF  .~ Double wall, jacket or casing for envelope
18  DF  .~.~ For conductive envelope devices
19  DF  .~.~.~ With plural electrode temperature modifying
20  DF  .~.~.~ With internal temperature modifying baffle
21  DF  .~.~.~ Cylindrical electrode type envelope
22  DF  .~.~ Fluid circulation type
23  DF  .~.~.~ Plural electrode temperature modifying
24  DF  .~.~.~ Flow directing means in casing
25  DF  .~.~ Sealed casing for envelope
26  DF  .~.~.~ Integral double wall type of envelope
27  DF  .~.~ Heat conserving or insulating type
28  DF  .~.~ Plural electrode temperature modifying
29  DF  .~ For liquid electrode
30  DF  .~ Hollow electrode or lead
31  DF  .~.~ Tubular coil electrode
32  DF  .~.~ Closed duct type (e.g., for liquid)
33  DF  .~ Envelope with internal temperature modifying baffle
34  DF  .~ Envelope with condensing chamber or surface
35  DF  .~ Using liquids or fluid flow directing means
36  DF  .~.~ Jacket or casing
37  DF  .~ For filament or heated cathode
38  DF  .~.~ Hollow shield around filament or cathode
39  DF  .~ For electrode within an envelope
40  DF  .~.~ Radiating type surface
41  DF  .~.~.~ Material, roughened surface
42  DF  .~ Mounted on lead-in or electrode support
43  DF  .~ For lead-in-seal or stem protection
44  DF  .~ For envelope wall
45  DF  .~ Radiating type surface
46  DF  .~ Having heat conducting path
47  DF  .~ Heat conserving or insulating type
48  DF  WITH HANDLE
49  DF  WITH DETACHABLE ELECTRICAL CONNECTOR OR SUPPORT
50  DF  .~ Resilient or vibration damping
51  DF  .~ Electrical connector
52  DF  CONVERTIBLE
53  DF  FLAME OR EXPLOSION TYPE
54  DF  WITH RADIOACTIVE MATERIAL
62  DF  CYCLOTRONS
359.1  DF  WITH POSITIVE OR NEGATIVE ION ACCELERATION
360.1  DF  .~ Plural apertured electrodes
361.1  DF  .~ Means for deflecting or focusing
362.1  DF  .~ Supplying ionizable material (e.g., gas or vapor)
363.1  DF  .~ Extraction or target electrode
364  DF  CATHODE RAY TUBE
365  DF  .~ Image pickup tube
366  DF  .~.~ Semiconductor depletion layer type
367  DF  .~.~.~ Mosaic
368  DF  .~.~.~.~ Plural junction
369  DF  .~.~ Mechanically responsive (e.g., sound)
370  DF  .~.~ Particular transparent conductor
371  DF  .~.~ With optical element
372  DF  .~.~.~ Light conducting fiber or rod
373  DF  .~.~ With photoemissive cathode
374  DF  .~.~.~ Mosaic
375  DF  .~.~.~ Plural photoemissive layers
376  DF  .~.~.~ With target
377  DF  .~.~.~.~ Secondary electron emissive
378  DF  .~.~.~.~ Support
379  DF  .~.~.~ Secondary electron emissive
380  DF  .~.~.~ Special ray sensitive
381  DF  .~.~.~ Image dissector
382  DF  .~.~.~ Focusing
383  DF  .~.~.~ Electrode or electrode support
384  DF  .~.~ Photoconductive
385  DF  .~.~.~ Layer composition
386  DF  .~.~.~.~ Plural layers
387  DF  .~.~.~ Secondary electron emissive
388  DF  .~.~.~ Special ray sensitive
389  DF  .~.~.~ Focusing
390  DF  .~.~.~ Electrode or electrode support
391  DF  .~ Storage
392  DF  .~.~ Depletion layer type storage element
393  DF  .~.~ Double ended
394  DF  .~.~ Continuous storage element
395  DF  .~.~ Foraminous storage element
396  DF  .~.~ With non-beaming gun
397  DF  .~.~ With display
398  DF  .~.~.~ Integral or contiguous storage and display element
399  DF  .~ Secondary emissive electrode
400  DF  .~.~ With display
401  DF  .~.~ Monoscope
402  DF  .~ Shadow mask, support or shield
403  DF  .~.~ Non-circular aperture
404  DF  .~.~ With resilient support
405  DF  .~.~.~ Bimetallic
406  DF  .~.~.~ With studs
407  DF  .~.~ With frame
408  DF  .~.~ With screen
409  DF  .~ Plural beam generating or control
410  DF  .~.~ With character forming electrode
411  DF  .~.~ One cathode source of plural beams
412  DF  .~.~ Convergence
413  DF  .~.~ With deflection
414  DF  .~.~ With focusing and accelerating electrodes
415  DF  .~.~ With screen
416  DF  .~.~.~ Including non-planar elements
417  DF  .~.~ With electrode support
418  DF  .~ Signal translating output electrode
419  DF  .~.~ Plural
420  DF  .~ Electron permeable window
421  DF  .~ Beam deflecting means
422  DF  .~.~ Flat tube type
423  DF  .~.~ Electron reflecting mirror
424  DF  .~.~ Ion trap
425  DF  .~.~ Centering
426  DF  .~.~ Plural
427  DF  .~.~.~ Three or more
428  DF  .~.~.~.~ With convergence
429  DF  .~.~.~.~ Field varied near screen (i.e., post deflection)
430  DF  .~.~.~.~.~ By external element
431  DF  .~.~.~.~ Plural magnetic
432  DF  .~.~.~ Electrostatic
433  DF  .~.~.~.~ Magnetic
434  DF  .~.~.~.~ Nonparallel or asymmetric
435  DF  .~.~.~.~.~ Nonplanar
436  DF  .~.~.~.~ Enclosed or overlapping
437  DF  .~.~.~.~ With distortion correction
438  DF  .~.~.~.~ With support
439  DF  .~.~ Electrostatic
440  DF  .~.~ With yoke
441  DF  .~ Ray generating or control
442  DF  .~.~ With magnetic focus
443  DF  .~.~.~ Internal
444  DF  .~.~ Sandwiched electrodes
445  DF  .~.~ Canted electrode (i.e., ion trap)
446  DF  .~.~ Including cathode assembly
447  DF  .~.~.~ With control grid adjacent cathode
448  DF  .~.~.~.~ With anode
449  DF  .~.~.~.~.~ With additional electrode
450  DF  .~.~.~.~.~.~ With coating or spiral electrode
451  DF  .~.~.~.~.~.~ With support
452  DF  .~.~.~ With focus electrode adjacent cathode
453  DF  .~.~.~.~ Noncircular beam type
454  DF  .~.~.~.~ Nonplanar cathode
455  DF  .~.~.~.~.~ Brillouin beam type
456  DF  .~.~ With support for electrode
457  DF  .~.~.~ Parallel rod type
458  DF  .~.~ Electrode
459  DF  .~.~.~ Movable
460  DF  .~.~.~ Plural
461  DF  .~ Screen
462  DF  .~.~ Scale or graticule
463  DF  .~.~ Electroluminescent
464  DF  .~.~ Incandescent type
465  DF  .~.~ Light valve type
466  DF  .~.~ Nonluminescent layer
467  DF  .~.~ Phosphor composition
468  DF  .~.~.~ Rare earth
469  DF  .~.~.~ Embedded in face plate
470  DF  .~.~ Mosaic
471  DF  .~.~.~ Beam indexing element
472  DF  .~.~.~ Dot type
473  DF  .~.~ Plural layer type
474  DF  .~.~ With optics
475  DF  .~.~.~ Light conducting fiber or rod
476  DF  .~.~ Support
477 R  DF  .~ Envelope
478  DF  .~.~ With external optical element
479  DF  .~.~ Coating or shielding
480  DF  .~.~ Composition
481  DF  .~.~ With getter or gas
482  DF  .~.~ Support for electrode or envelope
477 HC  DF  .~.~ With details of high-voltage connector
93  DF  GEIGER-MUELLER TYPE
523  DF  PHOTOSENSITIVE
524  DF  .~ With optical device
525  DF  .~ Having phosphor screen
526  DF  .~.~ Proximity focus type
527  DF  .~.~ Photocathode responsive to phosphor
528  DF  .~.~ With electron multiplier
529  DF  .~.~ With control electrode
530  DF  .~.~ With photocathode on envelope
531  DF  .~ Having plural photosensitive electrodes
532  DF  .~ Photomultiplier
533  DF  .~.~ Having plural dynodes
534  DF  .~.~.~ Channel or circular type
535  DF  .~.~.~ Venetian blind type
536  DF  .~.~.~ Box or linear type
537  DF  .~ Having a control electrode
538  DF  .~ Gas phototube
539  DF  .~ Responsive to ultraviolet radiation
540  DF  .~ Having plural anodes or cathodes
541  DF  .~ Having photocathode on tube wall
542  DF  .~ Photocathode
543  DF  .~.~ With phosphor
544  DF  .~.~ With envelope
103 R  DF  .~ Secondary emitter type (e.g., electron multiplier)
103 CM  DF  .~.~ Channel multiplier
104  DF  .~ Plural secondary emissive electrodes
105 R  DF  .~.~ Three or more
105 CM  DF  .~.~.~ Channel multiplier
106  DF  SECONDARY EMISSION PREVENTION
107  DF  .~ Nonemissive material
107.5  DF  VARIABLE WIDTH ELECTRON STREAM (E.G., MAGIC EYE)
483  DF  WITH LUMINESCENT SOLID OR LIQUID MATERIAL
484  DF  .~ With gaseous discharge medium
485  DF  .~.~ Phosphor on envelope wall
486  DF  .~.~.~ Including particular phosphor
487  DF  .~.~.~.~ Plural
488  DF  .~.~.~ Aperture-type tube
489  DF  .~.~.~ With protective coating or filter
490  DF  .~.~.~ With amalgam
491  DF  .~.~.~ Electrode structure or material
492  DF  .~.~.~.~ With shield or additional electrode
493  DF  .~.~.~ Envelope structure or material
494  DF  .~ Coplanar electrodes
495  DF  .~ Vacuum-type tube
496  DF  .~.~ Phosphor on anode segments
497  DF  .~.~.~ With accelerating or control electrode
498  DF  .~ Solid-state type
499  DF  .~.~ Semiconductor depletion layer type
500  DF  .~.~.~ Matrix or array
501  DF  .~.~.~ Light conversion
502  DF  .~.~ With phosphor embedding material
503  DF  .~.~ With particular phosphor or electrode material
504  DF  .~.~.~ Organic phosphor
505  DF  .~.~ With electrode matrix
506  DF  .~.~ Plural layers
507  DF  .~.~.~ With photosensitive layer
508  DF  .~.~.~ With piezoelectric layer
509  DF  .~.~.~ With dielectric layer
510  DF  .~.~ With character display (e.g., digits or letters)
511  DF  .~.~ Flexible
512  DF  .~.~ With envelope or encapsulation
513  DF  WITH CHARACTER DISPLAY (E.G., DIGITS OR LETTERS)
514  DF  .~ Gaseous discharge medium
515  DF  .~.~ With character-shaped envelope
516  DF  .~.~ Electrode with character-shaped aperture
517  DF  .~.~ With electrode display segments
518  DF  .~.~.~ With dielectric layer or coating
519  DF  .~.~.~ Multiple display (i.e., side-by-side)
520  DF  .~.~ With integrant display electrode
521  DF  .~.~.~ Stacked electrodes (i.e., superimposed)
522  DF  .~ Incandescent filament display
110  DF  WITH OPTICAL DEVICE OR SPECIAL RAY TRANSMISSIVE ENVELOPE
111  DF  .~ Plural diverse optical devices
112  DF  .~ Polarizer or special ray transmission (e.g., filter)
113  DF  .~ Reflector
114  DF  .~.~ Plural reflectors
115  DF  .~.~ Multiple filament lamps
116  DF  .~ Light diffusing
117  DF  .~ Light valve or obscuring means
118  DF  SPARK PLUGS
119  DF  .~ Sealing-off valve for electrode chamber
120  DF  .~ With fluid feed or air vent
121  DF  .~ Reversible (e.g., part)
122  DF  .~ Removable electrode on shell
123  DF  .~ Plural series gaps
124  DF  .~.~ Intensifier in center electrode lead-in
125  DF  .~ Movable electrode (e.g., for cleaning, adjustable)
126  DF  .~.~ Automatically moved (e.g., engine vibration)
127  DF  .~ Cleaner (e.g., movable scraper)
128  DF  .~ Plural insulated electrodes with individual lead-in
129  DF  .~ With transparent part
130  DF  .~ Non-conducting material in or adjacent gap (e.g., restricts spark)
131 R  DF  .~.~ Non-shortest line spark and surface spark type
131 A  DF  .~.~.~ Spark plugs with semiconductive material at the gap
132  DF  .~ Capillary groove or space
133  DF  .~ Ball electrode
134  DF  .~ With radio shielding
135  DF  .~ With particular connector structure
136  DF  .~ Plural part center electrode lead-in
137  DF  .~ Plural part insulating means
138  DF  .~ Electrodes are pure figures of revolution about plug axis
139  DF  .~ Ring or disk electrode (e.g., sector)
140  DF  .~ Plural parallel gaps (e.g., main and standby, serrated electrode)
141  DF  .~ Particular electrode structure or spacing
142  DF  .~.~ Gap on and along axis
143  DF  .~ Shaped electrode chamber, insulator end, shell skirt, baffle or gas directing means
144  DF  .~ With specific joint structure
145  DF  .~.~ Between center electrode and insulator
146  DF  WITH MOVABLE ELECTRODE OR SHIELD
147  DF  .~ Plural
148  DF  .~ Movable envelope wall
149  DF  .~ Rotary
150  DF  .~ Movable liquid electrode
151  DF  .~ Thermal actuator
152  DF  .~ Magnetic actuator
153  DF  WITH MAGNETIC DEVICE
154  DF  .~ For generating plural fields
155  DF  .~ Electrode generates field
156  DF  .~ Field transverse to discharge
157  DF  .~.~ Concentrically arranged electrode with axial field
158  DF  .~.~.~ Pole pieces facing electrode ends
159  DF  .~.~.~.~ Electrode support penetrates pole piece
160  DF  .~ With envelope
161  DF  .~.~ Gas or vapor type
162  DF  .~.~ Three or more electrodes
163  DF  LIQUID ELECTRODE DISCHARGE DEVICES
164  DF  .~ Shock absorber for liquid
165  DF  .~ Plural liquid electrodes
166  DF  .~ Starting band or external electrode
167  DF  .~ Apertured electrode (e.g., grid) interposed in discharge space
168  DF  .~ Plural anodes in separate envelope chambers
169  DF  .~ Plural anodes with anode arc shield
170  DF  .~ Auxiliary starting or holding electrode
171  DF  .~.~ Immersed in liquid electrode
172  DF  .~ Liquid in contact with plural electrodes
173  DF  .~ Cathode spot anchoring
545  DF  HAVING VALVE WITH GETTER, GAS/VAPOR GENERATING MATERIAL OR PRESSURE CONTROL MEANS
546  DF  WITH FRANGIBLE CAPSULE CONTAINING GETTER, GAS OR VAPOR GENERATING MATERIAL
547  DF  HAVING HEATING MEANS TO CONTROL GAS/VAPOR, GAS OR VAPOR GENERATING MEANS, OR GETTER MEANS
548  DF  .~ Incandescent lamp gettering
549  DF  .~ Discharge device gettering
550  DF  .~ Vapor generating
551  DF  .~ Gas generating
552  DF  HAVING PRESSURE CONTROL OF GAS OR VAPOR
553  DF  WITH GETTER
554  DF  .~ Plural
555  DF  .~.~ Diverse
556  DF  .~ And vapor generator
557  DF  .~ Incandescent lamp type
558  DF  .~ Electrode includes getter, supports getter, or is connected to getter
559  DF  .~ Mounted on electrode support
560  DF  .~ With structure to direct or shield from getter
561  DF  .~ With contained getter
562  DF  .~ Gas or vapor device type
563  DF  HAVING GAS GENERATING MATERIAL
564  DF  HAVING VAPOR GENERATING MATERIAL
565  DF  .~ Mercury vapor material
566  DF  .~ Electrode or electrode support includes material
567  DF  WITH GAS OR VAPOR
568  DF  .~ Having a particular total or partial pressure
569  DF  .~.~ Incandescent lamp
570  DF  .~.~ Greater than 760 torr
571  DF  .~.~.~ Includes mercury in gas or vapor fill
572  DF  .~.~ One torr thru 760 torr
573  DF  .~.~.~ Having specified envelope detail
574  DF  .~.~.~ With electrode structure
575  DF  .~.~.~.~ Composite
576  DF  .~.~.~.~.~ With rare gas
577  DF  .~.~ Less than .1 torr
578  DF  .~ Incandescent filament lamp
579  DF  .~.~ Tungsten-halogen cycle lamp
580  DF  .~.~ With filter, barrier, screen, shield, electric terminal or fuse
581  DF  .~ Three or more electrode discharge device
582  DF  .~.~ Multiple gaseous discharge display panel
583  DF  .~.~.~ Having electric terminal detail
584  DF  .~.~.~ Having intersecting electrode sets
585  DF  .~.~.~.~ With three sets of electrodes
586  DF  .~.~.~.~ With dielectric member
587  DF  .~.~.~.~.~ And additional layer on member
588  DF  .~.~ Amplifier, cathanode, or ionic cathode
589  DF  .~.~ Counter, indicator, or switching tube
590  DF  .~.~ With shield to prevent discharge between electrodes
591  DF  .~.~ Having cathode heater
592  DF  .~.~.~ With control electrode
593  DF  .~.~.~.~ Plural
594  DF  .~.~ Start electrode exterior to envelope
595  DF  .~.~ Internal start or control electrode between discharge electrodes
596  DF  .~.~.~ Strip electrode
597  DF  .~.~.~ Interposed apertured electrode
598  DF  .~.~.~.~ Mean free-path spacing
599  DF  .~.~.~.~ Plural serial apertured electrodes
600  DF  .~.~.~ Two interposed electrodes
601  DF  .~.~ Start electrode not in main discharge path
602  DF  .~.~.~ Trigger electrode concentric with discharge electrode
603  DF  .~.~.~ Triggerable vacuum gap device
604  DF  .~.~ Plural serial electrodes
605  DF  .~ Mean free-path spacing of envelope portions or content parts
606  DF  .~.~ Electrode spacing related to mean free path length
607  DF  .~ Having electrode exterior to envelope
608  DF  .~ Single electrode type discharge device, or including particulate material
609  DF  .~ Having baffle, partition, or constricting means affecting discharge
610  DF  .~.~ Partition
611  DF  .~.~ Constriction means
612  DF  .~.~.~ Substantially the full length of discharge path
613  DF  .~ Having electrode shield
614  DF  .~.~ With anode shield
615  DF  .~.~ Crater electrode with shield
616  DF  .~.~ With positive ion or cathode shield
617  DF  .~ Having spur electrode
618  DF  .~ Having hollow cathode
619  DF  .~ Negative or cathode glow device
620  DF  .~ Having specified electrode spacing
621  DF  .~ Having electrodes with geometrical relationship
622  DF  .~ Discharge device with diverse electrodes
623  DF  .~ Having electrode lead-in or electrode support sealed to envelope
624  DF  .~.~ End cap seal
625  DF  .~.~ End plug seal
626  DF  .~ Having lead-in shield
627  DF  .~ Having electrode heated by space discharge current
628  DF  .~.~ Coil type
629  DF  .~ Having resistance heated cathode
630  DF  .~ Having electrode of alkali, alkaline or rare earth material
631  DF  .~ Having particular electrode structure
632  DF  .~.~ Cathode or anode
633  DF  .~ Electrode composition
634  DF  .~ Envelope with particular structure
635  DF  .~.~ Envelope layer or coating
636  DF  .~ Envelope composition
637  DF  .~ With particular gas or vapor
638  DF  .~.~ With metal vapor
639  DF  .~.~.~ Mercury vapor
640  DF  .~.~.~.~ And rare earth metal
641  DF  .~.~.~.~.~ With rare gas
642  DF  .~.~.~.~ And rare gas
643  DF  .~.~ One or more rare gases
230  DF  DISCHARGE DEVICE WITH POSITIVE ION EMITTER
231.01  DF  FLUENT MATERIAL SUPPLY OR FLOW DIRECTING MEANS
231.11  DF  .~ Lightning or surge arrester
231.21  DF  .~.~ Expulsion type
231.31  DF  .~ Plasma
231.41  DF  .~.~ Arc discharge type
231.51  DF  .~.~.~ With tangential fluent supply
231.61  DF  .~.~.~ Electromagnetic output (i.e., light)
231.71  DF  .~ Arc discharge lamp or radiation source
232  DF  ELECTRODES IMMERSED IN LIQUID
233  DF  INVOLVING PARTICULAR DEGREE OF VACUUM
234  DF  ELECTRODE EXTERIOR TO ENVELOPE
235  DF  IMPERFECT ELECTRICAL CONTACT BETWEEN ELECTRODES
236  DF  STAND-BY ELECTRODE TYPE (WITH SPARE ELECTRODE)
237  DF  WITH ELECTRODE REPLACEMENT MEANS OR DEMOUNTABLE
238  DF  WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD
239  DF  .~ For shield
240  DF  .~.~ Shield supported by electrode, electrode support, or spacer
241  DF  .~.~.~ Extending across ends of plural discharge device electrodes
242  DF  .~.~ Shield supported by or forming part of envelope stem
243  DF  .~ For plural electrodes of discharge device
244  DF  .~.~ Envelope supports or forms electrode
245  DF  .~.~.~ Plural discharge spaces formed by three or more electrodes
246  DF  .~.~.~ Electrode forms part of envelope
247  DF  .~.~.~.~ Hollow electrode with another electrode supported by end structure
248  DF  .~.~.~ Conductive envelope supports plural electrodes
249  DF  .~.~.~ Elongated envelope with electrodes spaced along length
250  DF  .~.~.~.~ With spacer between electrodes or electrode supports
251  DF  .~.~.~.~ Plural electrodes supported along the length of a wire, rod, or tube
252  DF  .~.~.~ Support structure supported by the envelope
253  DF  .~.~.~.~ At spaced or opposed portions of envelope
254  DF  .~.~.~.~.~ At three or more portions of envelope
255  DF  .~.~.~.~.~ Same electrode supported by spaced or opposed portions
256  DF  .~.~.~.~ Insulating or ceramic support rod or tube
257  DF  .~.~.~.~ With spacer between electrode or electrode supports
258  DF  .~.~.~.~.~ Spacer between envelope and support or electrode
259  DF  .~.~.~.~.~ Insulating coating forms spacer
260  DF  .~.~.~.~.~ Plate or bar extending across ends of electrodes
261  DF  .~.~.~.~.~.~ Plates or bars at opposed ends of electrodes
262  DF  .~.~.~.~.~ Ceramic bead for joining parts
263  DF  .~.~.~.~ With indirectly heated cathode
264  DF  .~.~.~.~ With U-shaped, V-shaped, or plural sections filament
265  DF  .~.~.~.~ Apertured electrode (e.g., grid) supported between two other electrodes
266  DF  .~.~.~.~ Stem or envelope structure
267  DF  .~.~ Plural rod electrodes
268  DF  .~.~ Insulating spacer between discharge electrodes
269  DF  .~ With vibration damping device
270  DF  .~ For indirectly heated cathode
271  DF  .~ For filament
272  DF  .~.~ Plural filaments
273  DF  .~.~ Plural section filament
274  DF  .~.~ Supports supported by opposed parts of envelope
275  DF  .~.~ Insulator supports filament
276  DF  .~.~.~ Conductive member supports insulator
277  DF  .~.~.~ Insulating standard supports filament brackets or anchors
278  DF  .~.~ Tension device for filament
279  DF  .~.~ Support intermediate of filament ends
281  DF  .~ Support mounted in or around aperture in conductive wall or plate
282  DF  .~ Conductive envelope supports electrode
283  DF  .~ Electrode supported by envelope
284  DF  .~.~ Electrode supporting member supported by envelope
285  DF  .~.~.~ Supporting wire, rod, or tube supported by envelope
286  DF  .~.~.~.~ At spaced or opposed portions of envelope
287  DF  .~.~.~.~ Support collar surrounding envelope stem
288  DF  .~.~.~.~ Spacer between envelope and support or electrode
289  DF  .~.~.~.~ Ceramic or insulating support
290  DF  .~.~.~.~ Stem or envelope structure
291  DF  .~.~ Electrode formed by coating on envelope
292  DF  .~ Supporting and/or spacing elements
293  DF  DISCHARGING DEVICES WITH APERTURED ELECTRODE (E.G., GRID) INTERPOSED BETWEEN TWO ELECTRODES
294  DF  .~ Non-uniformly spaced from another electrode
295  DF  .~ Interposed electrode with non-uniform mesh area (e.g., variable mu)
296  DF  .~ Plural interposed apertured electrodes
297  DF  .~.~ Serially arranged
298  DF  .~.~.~ Plural interelectrode discharge
299  DF  .~.~.~ Aligned apertures (e.g., beam power)
300  DF  .~.~.~ Three or more serially arranged
301  DF  .~.~ Plural interelectrode discharge spaces
302  DF  .~ Plural cathodes
303  DF  .~ Three or more nonemissive electrodes (e.g., plural anodes)
304  DF  .~ Plural-parallel-section cathode with electrode surrounding each section
305  DF  DISCHARGE HEATED ANODE TYPE (E.G., CATHANODE)
306  DF  DISCHARGE DEVICES HAVING THREE OR MORE ELECTRODES
307  DF  .~ Four or more electrodes
308  DF  .~ Discharge control electrode
309  DF  DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE
310  DF  DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE
311  DF  DISCHARGE DEVICES HAVING AN ELECTRODE OF PARTICULAR MATERIAL
312  DF  WITH CASING OF JACKET FOR ENVELOPE
313  DF  WITH ELECTRICAL SHIELD OR STATIC CHARGE DISTRIBUTION MEANS
314  DF  NONREPAIRABLE
315  DF  INCANDESCENT LAMPS
316  DF  .~ Plural filaments or glowers
317  DF  WITH ENVELOPE
318.01  DF  .~ Having base and connector
318.02  DF  .~.~ Secure to each end of a double-ended or tubular envelope
318.03  DF  .~.~ Having an annular contact disposed concentrically about the longitudinal axis of the envelope
318.04  DF  .~.~.~ Having screw thread coupling contact
318.05  DF  .~.~ Having spaced, longitudinally engaging, pronglike contacts
318.06  DF  .~.~ Having three or more electrical contacts
318.07  DF  .~.~ Associated with pinch (or press) seal of envelope
318.08  DF  .~.~ Base attached to the envelope with cement or adhesive
318.09  DF  .~.~ Base attached to the envelope with friction or other mechanical means
318.1  DF  .~.~.~ Resilient mechanical means for attaching the base to the envelope
318.11  DF  .~.~ Having a reflector in combination with base
318.12  DF  .~ Having a connector
323  DF  COMBINED
324  DF  .~ With casing or jacket
325  DF  MISCELLANEOUS DISCHARGE DEVICES
326  DF  ELECTRODE AND SHIELD STRUCTURES
327  DF  .~ Self-baking electrodes (e.g., Soederberg)
328  DF  .~ Liquid electrode container
329  DF  .~ Mosaic electrodes
331  DF  .~ With lead wire or connector
332  DF  .~.~ Inserted section or material
333  DF  .~.~ Filament or wire shield or electrode
334  DF  .~.~ Nonmetallic electrode or shield
335  DF  .~.~ Rod electrode or shield
336  DF  .~ Point source cathodes
337  DF  .~ Indirectly heated cathodes
338  DF  .~.~ Plural separate cathode sections
339  DF  .~.~ Interior emissive hollow cathodes
340  DF  .~.~ Insulating material between heater and cathode
341  DF  .~ Filament or resistance heated electrodes
342  DF  .~.~ Noninductive
343  DF  .~.~ Plural wires or strands
344  DF  .~.~ Coiled
345  DF  .~.~ Coated
346 R  DF  .~ Cathodes containing and/or coated with electron emissive material
346 DC  DF  .~.~ Dispensator cathode
347  DF  .~ Incandescible upon electron bombardment
348  DF  .~ Foraminous electrodes (e.g., grids) or shields
349  DF  .~.~ Nonuniform mesh area or nonstraight electrodes or nonuniform cross sectional area electrodes
350  DF  .~.~ Rods, wire, or mesh supported on rod or post
351  DF  .~ Multipointed or serrated edge electrode
352  DF  .~ Composite electrodes or shields
353  DF  .~.~ With non-discharge-sustaining portion
354  DF  .~.~ Cored rod
355  DF  .~.~ Coated or laminated
356  DF  .~ Tubular or hollow sleeve
357  DF  .~ Rods
358  DF  MISCELLANEOUS (E.G., ELECTROLYTIC LIGHT SOURCE)
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DIGEST
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DIG 7  DD  Bombardment induced conductivity