US PATENT SUBCLASS 327 / 282
.~.~.~.~ 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}
276  DF  .~.~ Single output with variable or selectable delay {3}
278  DF  .~.~.~ Having specific active circuit element or structure (e.g., complementary transistors, etc.) {4}
282.~.~.~.~ Electron tube

DEFINITION

Classification: 327/282

Electron tube:

(under subclass 278) 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 the input pulse.

275, for output waveform production delay using an electron tube within an active circuit element or structure having multiple outputs with a plurality of delay intervals.