US PATENT SUBCLASS 370 / FOR 191
.~.~ Pulse amplitude modulation (370/114)

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

FOR 135  DF  TIME DIVISION (370/77) {14}
FOR 189  DF  .~ Multiplexers/distributors (hierarchy and level) (370/112) {3}
FOR 191.~.~ Pulse amplitude modulation (370/114)

DEFINITION

Classification: 370/FOR.191

Pulse amplitude modulation:

Foreign art collection including subject matter in which the signals respectively from or to the multiplexer or distributor are transmitting in pulse amplitude modulated format (PAM).