US PATENT SUBCLASS 327 / 507
.~ Two electrode electron tube

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

365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT) {12}
507.~ Two electrode electron tube {1}
508  DF  .~.~> Bridge circuit

DEFINITION

Classification: 327/507

Two electrode electron tube:

(under subclass 365) Subject matter including a vacuum or gas filled tube having two electrodes in which electrical currents flow between spaced electrodes, and in which the conduction of charged particles (e.g., electrons), takes place between electrodes.