US PATENT SUBCLASS 250 / 374
.~ Including a radiant energy responsive gas discharge device


Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
374.~ Including a radiant energy responsive gas discharge device {8}
375  DF  .~.~> Methods
376  DF  .~.~> With electroscopic indicators {2}
379  DF  .~.~> With means to supply the gas {2}
382  DF  .~.~> With means to ionize the gas {2}
385.1  DF  .~.~> Plural chambers or three or more electrodes {1}
386  DF  .~.~> With a periodic electrode bias varying means
387  DF  .~.~> With periodic electrode bias supply
388  DF  .~.~> With indicator


DEFINITION

Classification: 250/374

(under subclass 336.1) Subject matter wherein the two electrically accessible points are separated by an ionizable gas, which gas when subjected to invisible radiation ionizes and conducts a current from one point to the other, the current being the signal.

SEE OR SEARCH CLASS

313, Electric Lamp and Discharge Devices,

93, for radiant energy responsive gas discharge devices, per se.

315, Electric Lamp and Discharge Devices: Systems,

149, for systems for energizing discharge devices that are responsive to radiant energy.

324, Electricity: Measuring and Testing, 459+, for testing for other than radiation by ionization means.