US PATENT SUBCLASS 329 / 355
.~.~ With electron discharge device

Current as of: June, 1999
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329 /   HD   DEMODULATORS

347  DF  AMPLITUDE MODULATION DEMODULATOR {12}
354  DF  .~ Including microwave or distributed parameter structure {1}
355.~.~ With electron discharge device

DEFINITION

Classification: 329/355

With electron discharge device:

(under subclass 354) Subject matter utilizing a device which has electrical current flow between two spaced electrodes in a gas, vapor or vacuum.

(1) Note. This might include, for example, vacuum or gas tubes such as diodes, triodes or pentodes.

(2) Note. Additional control electrodes may be present.