US PATENT SUBCLASS 702 / 103
.~ Acoustic

Current as of: June, 1999
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702 /   HD   DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING

85  DF  CALIBRATION OR CORRECTION SYSTEM {18}
103.~ Acoustic

DEFINITION

Classification: 702/103

Acoustic:

(under subclass 85) Subject matter comprising means to calibrate or correct sound wave measuring instrument or signal representing such measurement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

48, for acoustic flow metering.

54, for fluid measurement having vibration or acoustic sensor.

159, for dimensional determination by a reflected ultrasonic signal.

SEE OR SEARCH CLASS

181, Acoustics, appropriate subclasses for sound generating or modifying apparatus, per se.