US PATENT SUBCLASS 181 / 125
SOUND LOCATION
Current as of: June, 1999
Click HD for Main Headings
Click for All Classes
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.
