US PATENT SUBCLASS 315 / 111.81
.~ Electron or ion source

Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

111.01  DF  DISCHARGE DEVICE LOAD WITH FLUENT MATERIAL SUPPLY TO THE DISCHARGE SPACE {3}
111.81.~ Electron or ion source {1}
111.91  DF  .~.~> Gas ionization type (e.g., ion pump or gauge source)

DEFINITION

Classification: 315/111.81

Electron or ion source:

(under subclass 111.01) Subject matter including means for producing electrons or ions.

(1) Note. Included here are electron sources of general utility.