US PATENT SUBCLASS 104 / 297
.~.~.~.~ Superimposed signal on same conductor


Current as of: June, 1999
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104 /   HD   RAILWAYS

287  DF  CAR-CARRIED PROPULSION SYSTEM {3}
288  DF  .~ Electric {3}
295  DF  .~.~ External car control {8}
296  DF  .~.~.~ Auxiliary function on car {1}
297.~.~.~.~ Superimposed signal on same conductor


DEFINITION

Classification: 104/297

Superimposed signal on same conductor:

(under subclass 296) Apparatus comprising a multiplex system for transmitting concurrently along a common conductor a signal for operating or controlling means propelling the vehicle and a signal for operating or controlling the electrical device.