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Class Information
Number: 367/1
Name: Communications, electrical: acoustic wave systems and devices > Sonar counter-measures
Description: Subject matter comprising decoys or jamming systems for rendering nonseismic echo systems or distance or direction finding systems ineffective.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
4284169 Bubble noise reduction Aug. 18, 1981
4255797 Sonic attenuation system Mar. 10, 1981
4241426 False phase front acoustic decoy Dec. 23, 1980
4231311 Towable pod assembly for protectively disabling incoming torpedoes Nov. 4, 1980
4219885 Sonar target simulator Aug. 26, 1980
4219886 Multi-point reflective target system Aug. 26, 1980
4216534 Decoying acoustic homing torpedoes Aug. 5, 1980
4214313 Multiple sonar masking and jamming countermeasure system Jul. 22, 1980
4207819 Helicopter destroyer Jun. 17, 1980
4207626 Acoustic decoy and jammer Jun. 10, 1980
4202047 Acoustic jammer and torpedo decoy May. 6, 1980
4200920 Artificial underwater target Apr. 29, 1980
4200859 Device for simulating marine craft noises Apr. 29, 1980
4198703 Submarine simulating sonar beacon Apr. 15, 1980
4194246 Noisemaker beacon Mar. 18, 1980
4194167 Up-Doppler simulator Mar. 18, 1980
4183302 Sequential burst system Jan. 15, 1980
4184209 Towed noisemaker Jan. 15, 1980
4164727 Underwater acoustic absorber Aug. 14, 1979
4090171 Underwater acoustic pressure release reflector May. 16, 1978
4086560 Secret depth sounder Apr. 25, 1978
4060790 Method of detecting the presence of an enemy submarine Nov. 29, 1977
4047592 Self-driven underwater noisemaking device Sep. 13, 1977
4025724 Noise cancellation apparatus May. 24, 1977
3959766 Target simulator system May. 25, 1976
3958214 Encoded echo-ranging signal generator May. 18, 1976
3956729 Countermeasures apparatus May. 11, 1976
3943870 Pinging controlled anti-torpedo device Mar. 16, 1976
3939462 Dopplerizing a signal of varying frequency Feb. 17, 1976

1 2 3










 
 
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