US PATENT SUBCLASS 375 / 307
.~.~.~ Two or more oscillators

Current as of: June, 1999
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375 /   HD   PULSE OR DIGITAL COMMUNICATIONS

295  DF  TRANSMITTERS {6}
302  DF  .~ Angle modulation {2}
303  DF  .~.~ Frequency shift keying {4}
307.~.~.~ Two or more oscillators

DEFINITION

Classification: 375/307

Two or more oscillators:

(under subclass 303) Subject matter where the carrier wave is generated by switching between two or more oscillators of differing frequency