US PATENT SUBCLASS 455 / 108
.~ Amplitude modulation

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

91  DF  TRANSMITTER {22}
108.~ Amplitude modulation {1}
109  DF  .~.~> Vestigial or single sideband or suppressed carrier

DEFINITION

Classification: 455/108

Amplitude modulation:

(under subclass 91) Subject matter where the amplitude of the carrier is varied under control of the intelligence to be transmitted.