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Class Information
Number: 367/761
Name: Communications, electrical: acoustic wave systems and devices >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
367/1	Sonar counter-measures	128
367/117	Plural transmitters to receiver or transmitter to plural receivers	103
367/118	Distance or direction finding	200
367/12	Beam stabilization or compensation	58
367/13	Testing, monitoring, or calibrating	323
367/131	Underwater system	281
367/135	Receiver circuitry	262
367/137	Transmitter systems	161
367/14	Seismic prospecting	114
367/140	Signal transducers	323
367/191	Miscellaneous	103
367/197	Selective (e.g., remote control)	102
367/2	Transponders	73
367/7	Acoustic image conversion	212
367/81	Wellbore telemetering	128
367/86	Borehole testing	90
367/87	Echo systems	224
367/900	Sonar time varied gain control systems	59
367/901	Noise or unwanted signal reduction in nonseismic receiving system	206
367/902	Speed of sound compensation	88
367/903	Transmit-receive circuitry	80
367/904	Doppler compensation systems	52
367/905	Side lobe reduction or shading	83
367/906	Airborne shock-wave detection	85
367/907	Coordinate determination	98
367/908	Material level detection, e.g., liquid level	212
367/909	Collision avoidance	160
367/910	Portable sonar devices	104
367/911	Particular well-logging apparatus	141