US PATENT SUBCLASS 315 / 351
.~.~.~ Plural pulsating or A.C. currents and/or potentials

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

326  DF  DISCHARGE DEVICE LOAD {8}
349  DF  .~ Discharge control discharge device load {4}
350  DF  .~.~ Plural control currents and/or potentials {1}
351.~.~.~ Plural pulsating or A.C. currents and/or potentials

DEFINITION

Classification: 315/351

(under subclass 350) Systems provided with means to apply a pulsating and an alternating current and/or potential, or two or more different pulsating or alternating currents and/or potentials to the discharge control means.

(1) Note. In systems wherein a transformer is provided which has its secondary connected to the discharge control circuits, two or more primaries each energized by pulsating or alternating current and having the secondary connected to the control circuit, the patent is placed in subclass 354 below and not in this subclass. Where two or more transformers are provided, and the secondary windings are connected either in series or parallel with the resultant potential impressed upon the control means, the patent is placed in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

271, for this subject matter where the discharge device is supplied with pulsating or alternating current.

354, see (1) Note. above.

SEE OR SEARCH CLASS 323, Electricity: Power Supply or Regulation Systems,

227, and 291 for electronic tube regulators. See Lines With Other Classes and Within This Class, "Electronic Tube Systems," in the class definition of Class 323.