US PATENT SUBCLASS 250 / 383
.~.~.~ Emissive fluent type, or with transmissive fluent material

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

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
374  DF  .~ Including a radiant energy responsive gas discharge device {8}
382  DF  .~.~ With means to ionize the gas {2}
383.~.~.~ Emissive fluent type, or with transmissive fluent material

DEFINITION

Classification: 250/383

(under subclass 382) Subject matter wherein the means to ionize the gas is another fluid-like material that emits invisible radiant energy, or wherein the means to ionize the gas comprises some other source of invisible radiation and there is provided some means to contain or otherwise accommodate between the source and the gas discharge device a

gas, fluid or fluid-like material through which the radiation from the source passes to the gas discharge device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

379+, for means to supply a radioactive gas to the space between the electrodes of the gas discharge device.

384+, for solid radioactive means to ionize the ionizable gas.