US PATENT SUBCLASS 360 / 30
.~ Frequency

Current as of: June, 1999
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360 /   HD   DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL

29  DF  MODULATING OR DEMODULATING {1}
30.~ Frequency

DEFINITION

Classification: 360/30

(under subclass 29) Subject matter including specific frequency modulation or demodulation of a signal.