US PATENT SUBCLASS 250 / 385.2
.~.~.~ Spark chambers

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

DEFINITION

Classification: 250/385.2

Spark chambers:

(under subclass 385.1) Subject matter wherein incoming radiant energy ionizes the gas molecules to trigger a spark between the electrically independent, electrically accessible points.

(1) Note. The position of the spark corresponds to the position of the ionizing event.

SEE OR SEARCH THIS CLASS, SUBCLASS:

385.1, for multiwire, position-sensitive detectors.

390.12, for position-sensitive neutron detectors.