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Class Information
Number: 367/115
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Distance or direction finding > With indicator > Permanent record
Description: Subject matter in which the display device provides a relatively long-lasting display of a transient indication.










Patents under this class:

Patent Number Title Of Patent Date Issued
7231331 Method and system to detect stress corrosion cracking in pipeline systems Jun. 12, 2007
6847586 Portable human height measuring device Jan. 25, 2005
5764466 Circuit for short circuit detection through resistive shunt in power circuits using unipolar control voltage Jun. 9, 1998
5256908 Facility space data logging device Oct. 26, 1993
4774573 Method and apparatus for generating a video display from signals produced by borehole scanning Sep. 27, 1988
4697253 Sonar heave compensation system Sep. 29, 1987
4651309 Fish sonar Mar. 17, 1987
4612633 Sonar apparatus with means to transmit and print on alternate cycles Sep. 16, 1986
4504931 Echo-sounding apparatus Mar. 12, 1985
4494224 Pipe measuring method and apparatus Jan. 15, 1985
4425635 Fish sonar Jan. 10, 1984
4422166 Undersea sonar scanner correlated with auxiliary sensor trace Dec. 20, 1983
4369508 Sonar having signal amplitude differentiation and noise suppression Jan. 18, 1983
RE31026 Navigation system for maneuvering a structure about a submerged object Sep. 7, 1982
4335451 Signalling method and apparatus for enhancing echo images Jun. 15, 1982
4322827 Range expander for sonar system Mar. 30, 1982
4308601 Echo ranging apparatus and method Dec. 29, 1981
4254484 Device for the determination of a ship in dock at the time of docking Mar. 3, 1981
4241430 Method and apparatus for determining the length of tubular members Dec. 23, 1980
4228530 Mud level monitor Oct. 14, 1980
4217593 Water depth-loran position recorder Aug. 12, 1980
4213198 Method for classification of sonar echoes Jul. 15, 1980
4208731 Method and device for determining the geometrical outline of the underwater part of icebergs and the draught thereof Jun. 17, 1980
4207620 Oceanographic mapping system Jun. 10, 1980
4205395 Depth recorder May. 27, 1980
4197591 Facsimile recording of sonic values of the ocean bottom Apr. 8, 1980
4186372 Brush holder for rectilinear recorder Jan. 29, 1980
4184210 Sonic echo scanning and facsimile recording of water submerged surfaces Jan. 15, 1980
4121190 Method of and apparatus for sonar detection and the like with plural substantially orthogonal radiation beams Oct. 17, 1978
4118709 Digital to graphic character generator Oct. 3, 1978
4105990 Process of and apparatus for exploring objects detected by different energy sources Aug. 8, 1978
4104608 Heave meter Aug. 1, 1978
4096484 Graphic recording system Jun. 20, 1978
4081783 Fish finder capable of discriminating sizes of fish Mar. 28, 1978
4080587 Echo sounder for detecting schools of fish Mar. 21, 1978
4063212 Side scan sonar system Dec. 13, 1977
4060814 Recorder with edge-guided belt Nov. 29, 1977
4052692 Accentuator circuit for underwater acoustical devices Oct. 4, 1977
4050057 Data sample recording system Sep. 20, 1977
4050054 Multi-contact brush type fish detecting sonar Sep. 20, 1977
4040056 Method for aberration-free optical recording of highly resolved sonar or radar maps Aug. 2, 1977
4034331 Fish counter Jul. 5, 1977
4025895 Navigation system for maneuvering a structure about a submerged object May. 24, 1977
4005383 Catacoustic navigating system Jan. 25, 1977
4001764 Acoustic method for detecting leaks from submerged pipelines Jan. 4, 1977
3990082 Method and means for recording of information Nov. 2, 1976
3978444 Seafloor mapping system Aug. 31, 1976
3975704 Method of and apparatus for sonar and related signal texture enhancement of recording media Aug. 17, 1976
3942149 Solid state depth sounder Mar. 2, 1976











 
 
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