US PATENT SUBCLASS 340 / 825.75
.~.~.~ Permutation

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

825  DF  SELECTIVE {23}
825.71  DF  .~ Frequency responsive actuation {2}
825.73  DF  .~.~ Plural frequencies {3}
825.75.~.~.~ Permutation

DEFINITION

Classification: 340/825.75

Permutation:

(under subclass 825.73) Subject matter wherein control is performed in accordance with the sequence of control signal frequencies transmitted.