US PATENT SUBCLASS 250 / 385.1
.~.~ Plural chambers or three or more electrodes

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}
385.1.~.~ Plural chambers or three or more electrodes {1}
385.2  DF  .~.~.~> Spark chambers

DEFINITION

Classification: 250/385.1

(under subclass 374) Plural chambers or three or more electrodes: Subject matter wherein there are more than two electrically independent, electrically accessible points or wherein the gas molecules between the electrically accessible points are prevented from free movement between the points by a wall or other barrier.