US PATENT SUBCLASS 361 / 277
.~ Variable

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

271  DF  ELECTROSTATIC CAPACITORS {4}
277.~ Variable {4}
278  DF  .~.~> With significant electrode or terminal feature
279  DF  .~.~> Gas or vacuum dielectric
280  DF  .~.~> Responsive to external condition {6}
287  DF  .~.~> Mechanically variable {5}

DEFINITION

Classification: 361/277

Variable:

(under subclass 271) Subject matter wherein the capacitance of the capacitor can be altered.

SEE OR SEARCH CLASS

216, Etching a Substrate: Processes,

6, for etching in the manufacturing of a capacitor.

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), appropriate subclasses for active solid-state semiconductor devices, per se, especially

480, for variable capacitance diodes and subclasses 595-602 for active voltage variable capacitance devices.

334, Tuners,

78+, for tuners having variable capacitors. 365, Static Information Storage and Retrieval,

102, and 149+ for memory storage capacitors.