US PATENT SUBCLASS 370 / 293
.~ Duplex repeaters or extenders


Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

276  DF  DUPLEX {6}
293.~ Duplex repeaters or extenders


DEFINITION

Classification: 370/293

Duplex repeaters or extenders:

(under subclass 276) Subject matter including circuitry for compensating for attenuation losses of duplex signals or for increasing the communication range for extension terminal equipment at either end of a duplex transmission line.

SEE OR SEARCH CLASS

178, Telegraphy,

70+, for a teles:graphic nonmultiplex repeater.

330, Amplifiers, for an amplifier which may be used as a repeater.

379, Telephonic Communications,

338+, for a telephonic nonmultiplex repeater.

455, Telecommunications, 7+, for a nonmultiplex telecommunication repeater system.