US PATENT SUBCLASS 330 / 4.7
.~.~ Electron beam device

Current as of: June, 1999
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330 /   HD   AMPLIFIERS

4.5  DF  PARAMETRIC AMPLIFIERS {3}
4.6  DF  .~ Traveling wave type {1}
4.7.~.~ Electron beam device

DEFINITION

Classification: 330/4.7

(under subclass 4.6) Subject matter wherein the propagating structure is an electron beam device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43+, for travelling wave amplifiers.

SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

3.5+, and 39.3, for miscellaneous travelling wave tube systems.