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

Sub-classes under this class:

Class Number Class Name Patents
367/1 Sonar counter-measures 129
367/117 Plural transmitters to receiver or transmitter to plural receivers 106
367/118 Distance or direction finding 207
367/12 Beam stabilization or compensation 58
367/13 Testing, monitoring, or calibrating 332
367/131 Underwater system 299
367/135 Receiver circuitry 270
367/137 Transmitter systems 164
367/14 Seismic prospecting 125
367/140 Signal transducers 337
367/191 Miscellaneous 103
367/197 Selective (e.g., remote control) 103
367/2 Transponders 78
367/7 Acoustic image conversion 215
367/81 Wellbore telemetering 132
367/86 Borehole testing 92
367/87 Echo systems 230
367/900 Sonar time varied gain control systems 59
367/901 Noise or unwanted signal reduction in nonseismic receiving system 208
367/902 Speed of sound compensation 90
367/903 Transmit-receive circuitry 80
367/904 Doppler compensation systems 54
367/905 Side lobe reduction or shading 83
367/906 Airborne shock-wave detection 86
367/907 Coordinate determination 99
367/908 Material level detection, e.g., liquid level 213
367/909 Collision avoidance 164
367/910 Portable sonar devices 104
367/911 Particular well-logging apparatus 141

Patents under this class:

Patent Number Title Of Patent Date Issued

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