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Your search returned 61 patents.
( 367/77 in Current US Classification ) |
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| Patent ID | Title | Date Filed |
| 4463451 | System for seismic digital data acquisition over water covered areas
| January 11, 1982 |
| 4366561 | Method and apparatus for testing a plurality of geophones
| October 30, 1978 |
| 4320473 | Borehole acoustic telemetry clock synchronization system
| August 10, 1979 |
| 4309763 | Digital sonobuoy
| May 8, 1978 |
| 4307790 | Weight-drop seismic exploration system
| March 29, 1978 |
| 4296485 | Tilt alarm in a seismic exploration system
| October 30, 1978 |
| 4296484 | Data display system
| October 30, 1978 |
| 4257098 | Computer to recording medium interface
| October 30, 1978 |
| 4236234 | Radio frequency seismic gathering system employing an airborne blimp
| July 25, 1979 |
| 4086504 | Distributed data acquisition
| October 29, 1973 |
| 4066993 | Limited-range seismic control system
| November 8, 1976 |
| 4042906 | Automatic data acquisition method and system
| October 29, 1973 |
| 4019148 | Lock-in noise rejection circuit
| December 29, 1975 |
| 4017833 | Summer for group recorder
| December 29, 1975 |
| 3972019 | Time synchronization
| July 9, 1973 |
| 3958216 | Two-wire multiplex seismic recording system
| March 18, 1974 |
| 3946357 | Method and apparatus for seismic geophysical exploration
| December 23, 1974 |
| 3902161 | Digital synchronizer system for remotely synchronizing operation of multiple energy sources and the like
| July 15, 1974 |
| 3900825 | Vibrator-type reflection seismic surveying
| October 24, 1973 |
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