US PATENT SUBCLASS 379 / 341-- .~ Pulse or tone repeater (e.g., electromechanical relay)

US PATENT SUBCLASS 379 / 341
.~ Pulse or tone repeater (e.g., electromechanical relay)

Current as of: June, 1999
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379 /	HD	TELEPHONIC COMMUNICATIONS

338	DF	REPEATER (E.G., VOICE FREQUENCY) {9}
341		.~ Pulse or tone repeater (e.g., electromechanical relay) {1}
342	DF	.~.~> Electronic (e.g., logic circuitry)

DEFINITION

Classification: 379/341

Pulse or tone repeater (e.g., electromechanical relay):

(under subclass 338) Subject matter for amplifying or restoring a pulse or tone signal.

(1) Note. Included in this subclass are electromagnetic relays.

SEE OR SEARCH THIS CLASS, SUBCLASS:

238, for interexchange signalling repeaters.

296, for similar subject matter combined with a centralized switching facility.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

160+, for relay control circuits.

375, Pulse or Digital Communications,

211+, for a pulse repeater.