US PATENT SUBCLASS 327 / 305
.~.~ With gas tube

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100  DF  SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
291  DF  .~ Clock or pulse waveform generating {11}
305.~.~ With gas tube

DEFINITION

Classification: 327/305

With gas tube:

(under subclass 291) Subject matter which incorporates an electron discharge device where a small amount of gas is ionized to permit current flow.