US PATENT SUBCLASS 379 / 402
.~ Hybrid circuit

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

399  DF  SUBSCRIBER LINE OR TRANSMISSION LINE INTERFACE {5}
402.~ Hybrid circuit {2}
403  DF  .~.~> With adjustable balance circuit {1}
405  DF  .~.~> Electronic noninductive

DEFINITION

Classification: 379/402

Hybrid circuit:

(under subclass 399) Subject matter including a two-wire to

four-wire converter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3, for testing of a hybrid circuits.

344, for similar subject matter including a telephone repeater.

391+, for a hybrid circuit in a substation of terminal.

SEE OR SEARCH CLASS

333, Wave Transmission Lines and Networks, 24+, for a coupling network.