US PATENT SUBCLASS 380 / 34
.~.~ Plural carrier frequencies

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

9  DF  ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) {18}
33  DF  .~ Using plural paths or channels {1}
34.~.~ Plural carrier frequencies

DEFINITION

Classification: 380/34

Plural carrier frequencies:

(under subclass 33) Subject matter which transmits different composite parts of an information signal over carrier waves of different frequencies.

SEE OR SEARCH CLASS

455, Telecommunications,

59, for a system which transmits a signal message over plural carrier waves absent message concealment.