US PATENT SUBCLASS 380 / 33
.~ Using plural paths or channels

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

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

DEFINITION

Classification: 380/33

Using plural paths or channels:

(under subclass 9) Subject matter which transmits an information signal or a portion thereof over different communications links simultaneously, serially, or alternately.

(1) Note. This subclass includes an alternate nonencrypted communications path.

SEE OR SEARCH CLASS

340, Communications: Electrical,

825.03+, for selective communication channel selection, absent encryption.

379, Telephonic Communications,

242+, for selective switching of a nonencrypted telephone circuit.