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


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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.