US PATENT SUBCLASS 367 / 126
.~.~ Addition or subtraction

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

118  DF  DISTANCE OR DIRECTION FINDING {6}
124  DF  .~ By combining or comparing signals {2}
126.~.~ Addition or subtraction

DEFINITION

Classification: 367/126

Addition or subtraction:

(under subclass 124) Subject matter in which the combined signal is the result of the addition or subtraction of a signal in one channel to or from, respectively, a signal in another channel.