US PATENT SUBCLASS 367 / 118
DISTANCE OR DIRECTION FINDING

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

118DISTANCE OR DIRECTION FINDING {6}
119  DF  .~> With beam steering, scanning, or focussing {2}
124  DF  .~> By combining or comparing signals {2}
127  DF  .~> With time interval measuring means
128  DF  .~> With electromagnetic wave
129  DF  .~> With plurality of transducers
130  DF  .~> With towing

DEFINITION

Classification: 367/118

DISTANCE OR DIRECTION FINDING:

(under the class definition) Subject matter in which the extent of linear and/or relative angular spacing between an acoustic wave emitter and receiver is determined.

(1) Note. The subject matter of this subclass may determine the range, azimuth and/or elevation of an acoustic wave source.

(2) Note. The acoustic wave emitter need not be a part of the distance and/or direction finding system itself.

SEE OR SEARCH CLASS

340, Communications: Electrical,

621, for acoustic wave liquid level alarms.