US PATENT SUBCLASS 370 / FOR 189
.~ Multiplexers/distributors (hierarchy and level) (370/112)

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

FOR 135  DF  TIME DIVISION (370/77) {14}
FOR 189.~ Multiplexers/distributors (hierarchy and level) (370/112) {3}
FOR 190  DF  .~.~> Apparatus and techniques for handling low level input signals (370/113)
FOR 191  DF  .~.~> Pulse amplitude modulation (370/114)
FOR 192  DF  .~.~> Electron beam switching device (370/115)

DEFINITION

Classification: 370/FOR.189

Multiplexers/distributors (hierarchy and level):

Foreign art collection including subject matter directed to scanning or sampling switches (multiplexers) operating above the Nyquist rate, or to demultiplexers or desampling switches (distributors) so operating.