US PATENT SUBCLASS 340 / 638
.~.~.~ Fuse or circuit breaker

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
635  DF  .~.~ Condition of electrical apparatus {15}
638.~.~.~ Fuse or circuit breaker {1}
639  DF  .~.~.~.~> Plural

DEFINITION

Classification: 340/638

Fuse or circuit breaker:

(under subclass 635) Subject matter where the device is current level responsive circuit interrupting device.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

424+, for the testing of circuit breakers.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

17, for electromagnetic circuit breakers with integral signalling, indicating, or alarm means.

337, Electricity: Electrothermally or Thermally Actuated Switches,

206, for fusible element actuated switches with integral indicator; subclass 241 for cartridge fuses with integral indicators; and subclass 265 for plug fuses with integral indicators.