US PATENT SUBCLASS 327 / 275
.~.~.~.~ Electron 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}
261  DF  .~ Having specific delay in producing output waveform {7}
269  DF  .~.~ Multiple outputs with plurality of delay intervals {3}
272  DF  .~.~.~ Having specific active circuit element or structure(e.g., FET, complementary transistors, etc.) {3}
275.~.~.~.~ Electron tube

DEFINITION

Classification: 327/275

Electron tube:

(under subclass 272) Subject matter including a gas filled or partially or fully evacuated (vacuum) device which regulates current flow between spaced electrodes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

267, for the use of an electron tube within an active circuit element or structure to control the output waveform production delay via the rising or falling edge of an input pulse.

282, for output waveform production delay using an electron tube within an active circuit element or structure having a single output with variable or selectable delay.