US PATENT SUBCLASS 367 / 123
.~.~.~ With phase shifter or delay means

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}
119  DF  .~ With beam steering, scanning, or focussing {2}
121  DF  .~.~ By electrical means {2}
123.~.~.~ With phase shifter or delay means

DEFINITION

Classification: 367/123

With phase shifter or delay means:

(under subclass 121) Subject matter wherein the electrical circuitry associated with the transducer includes means for changing the travel time of a signal from the input of the means to its output.