US PATENT SUBCLASS 89 / 41.08
.~.~.~ By sound

Current as of: June, 1999
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89 /   HD   ORDNANCE

37.01  DF  MOUNTS {18}
41.01  DF  .~ Training mechanisms {5}
41.02  DF  .~.~ Motor operated {12}
41.08.~.~.~ By sound

DEFINITION

Classification: 89/41.08

By sound:

(under subclass 41.02) Devices including means utilizing acoustic energy to control the power source in aiming an ordnance device.

SEE OR SEARCH CLASS

181, Acoustics,

125, for sound locating apparatus.

367, Communications, Electrical: Acoustic Wave Systems and Devices,

118+, for distance or direction finding.