US PATENT SUBCLASS 361 / 120
.~.~ Vacuum or gas filled space discharge

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

1  DF  SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32}
117  DF  .~ High voltage dissipation (e.g., lightning arrester) {10}
120.~.~ Vacuum or gas filled space discharge

DEFINITION

Classification: 361/120

Vacuum or gas filled space discharge:

(under subclass 117) Subject matter having a vacuum chamber or a gas filled or vapor filled chamber through which electricity passes by means of space conduction.