US PATENT SUBCLASS 327 / 301
.~.~ With electron beam type 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}
301.~.~ With electron beam type tube

DEFINITION

Classification: 327/301

With electron beam type tube:

(under subclass 291) Subject matter including at least one electron space discharge device whose performance depends upon the formation and control of one or more rays of elemental negatively charged particles.