US PATENT SUBCLASS 250 / 388
.~.~ With indicator

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}
388.~.~ With indicator

DEFINITION

Classification: 250/388

(under subclass 374) Subject matter combined with perceptible means to signal the presence or amount of radiation impinging upon the radiant energy responsive gas discharge device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

376+, for a radiant energy responsive gas discharge device combined with an electroscopis indicator.