US PATENT SUBCLASS 250 / 386
.~.~ With a periodic electrode bias varying means


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}
386.~.~ With a periodic electrode bias varying means


DEFINITION

Classification: 250/386

(under subclass 374) Subject matter combined with means to establish an electric potential difference between the electrically accessible points of the gas discharge tube, which means changes the value of the electric potential difference at random intervals of time.

(1) Note. The means of this subclass may change the bias voltage in response to a discharge in the gas device due to impinging radiation for the purpose of quenching the discharge. Since the time intervals between ionizing events is random the biasing means varying in response to such events is considered periodic.