US PATENT SUBCLASS 379 / 349
.~ Having voice frequency transformer

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

338  DF  REPEATER (E.G., VOICE FREQUENCY) {9}
349.~ Having voice frequency transformer

DEFINITION

Classification: 379/349

Having voice frequency transformer:

(under subclass 338) Subject matter under having a transformer specifically intended for use in the audio frequency range.