Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1992-04-17
1995-05-30
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
181115, 181120, H04R 2300
Patent
active
054208297
ABSTRACT:
The present invention is directed to a method and apparatus for substantially suppressing the undesired recoil derivative from the explosive discharge of high pressure gas from an airgun while still providing for useful optimized pressure pulses.
REFERENCES:
patent: 3379273 (1968-04-01), Chelminski
patent: 3739869 (1973-06-01), Mayne
patent: 3923122 (1975-12-01), Itria
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