US PATENT SUBCLASS 250 / 387
.~.~ With periodic electrode bias supply

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}
387.~.~ With periodic electrode bias supply

DEFINITION

Classification: 250/387

(under subclass 374) Subject matter combined with means to establish a potential difference between the two electrically accessible points which potential difference varies at equal intervals of time.

(1) Note. The periodic bias supply of this subclass functions, for example, to quench the discharge in the gas device.