US PATENT SUBCLASS 361 / 89-- .~.~ With time delay protective means

US PATENT SUBCLASS 361 / 89
.~.~ With time delay protective means

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}
88	DF	.~ With specific voltage responsive fault sensor {4}
89		.~.~ With time delay protective means

DEFINITION

Classification: 361/89

With time delay protective means:

(under subclass 88) Subject matter wherein the protective means is activated at a predetermined time after the fault is sensed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

195+, for time delay circuits in relay and solenoid systems.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

141, for time delay circuits in switching system.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

261+, and 392+ for miscellaneous delay circuits.