US PATENT SUBCLASS 379 / 416
.~ Interference suppression

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

414  DF  TRANSMISSION LINE CONDITIONING {2}
416.~ Interference suppression {1}
417  DF  .~.~> Anticrosstalk

DEFINITION

Classification: 379/416

Interference suppression:

(under subclass 414) Subject matter which reduces or eliminates an undesired signal.

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3, for testing of an echo suppressor.

400+, for echo cancellation or antisinging in a subscriber line or transmission line interface.