US PATENT SUBCLASS 367 / 122
.~.~.~ Transducer switching or gating

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}
122.~.~.~ Transducer switching or gating

DEFINITION

Classification: 367/122

Transducer switching or gating:

(under subclass 121) Subject matter wherein the directional characteristics are varied by selectively or repetitively opening and closing the electrical signal path from the transducer.