US PATENT SUBCLASS 181 / 125
SOUND LOCATION


Current as of: June, 1999
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181 /   HD   ACOUSTICS

125SOUND LOCATION


DEFINITION

Classification: 181/125

(under the class definition) Subject matter for ascertaining the direction from which a sound proceeds.

SEE OR SEARCH CLASS

73, Measuring and Testing,

170.16, for means for measuring cloud height, and subclass 290 for means for measuring liquid level.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation),

1, 205 for reflected radiant energy wave systems and subclasses 350+ for radio wave systems. 367, Communications, Electrical: Acoustic Wave Systems and Devices,

87, for electrical echo altimeters, subclass 99 for electrical underwater sound direction indication.