US PATENT SUBCLASS 378 / 136
.~.~ With specific cathode

Current as of: June, 1999
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378 /   HD   X-RAY OR GAMMA RAY SYSTEMS OR DEVICES

119  DF  SOURCE {3}
121  DF  .~ Electron tube {12}
136.~.~ With specific cathode

DEFINITION

Classification: 378/136

With specific cathode:

(under subclass 121) Subject matter including a specific embodiment of a cathode defining particular material or structure.