US PATENT SUBCLASS 332 / 134
.~.~.~ Travelling wave type

Current as of: June, 1999
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332 /   HD   MODULATORS

117  DF  FREQUENCY MODULATOR {6}
129  DF  .~ Including microwave or distributed parameter structure {2}
131  DF  .~.~ With electron discharge device {3}
134.~.~.~ Travelling wave type

DEFINITION

Classification: 332/134

Travelling wave type:

(under subclass 131) Subject matter wherein the discharge device has structure to slow a travelling electromagnetic wave to more closely match the velocity of an electron beam with which it is interacting.

SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems,

3.5+, for travelling wave tube combined with a delay transmission line.

331, Oscillators,

82, for a travelling wave-tube type oscillator.