US PATENT SUBCLASS 375 / 258
.~ Transformer coupling

Current as of: June, 1999
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375 /   HD   PULSE OR DIGITAL COMMUNICATIONS

257  DF  CABLE SYSTEMS AND COMPONENTS {1}
258.~ Transformer coupling

DEFINITION

Classification: 375/258

Transformer coupling:

(under subclass 257) Subject matter including an inductive coupling which is used between the driver and the transmission line or between the receiver and the transmission line for isolating the d.c. value.