US PATENT SUBCLASS 178 / 73
.~.~ Multiple line

Current as of: June, 1999
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70 R  DF  REPEATERS {16}
71.1  DF  .~ Automatic in either direction {14}
73.~.~ Multiple line

DEFINITION

Classification: 178/73

(under subclass 71) Automatic repeaters adapted to repeat the transmitted messages into a plurality of circuits or lines.