US PATENT SUBCLASS 370 / 275
.~ Duplex diplex

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

273  DF  QUADRUPLEX {2}
275.~ Duplex diplex

DEFINITION

Classification: 370/275

Duplex diplex:

(under subclass 273) Subject matter wherein quadruplexing is achieved by diplexing two duplex systems or by duplexing two diplex systems.

SEE OR SEARCH THIS CLASS, SUBCLASS:

276, for a duplex system.

297, for a diplex system.