US PATENT SUBCLASS 361 / 279
.~.~ Gas or vacuum dielectric

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

271  DF  ELECTROSTATIC CAPACITORS {4}
277  DF  .~ Variable {4}
279.~.~ Gas or vacuum dielectric

DEFINITION

Classification: 361/279

Gas or vacuum dielectric:

(under subclass 277) Subject matter utilizing a gas or a vacuum as the dielectric within a sealed housing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

326, for gas or vacuum fixed capacitors.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators,

8+, especially 9 and 17+ for miscellaneous boxes and housings for a single electrical component in which the housing holds either a vacuum or a gas.