| 6870795 |
Acoustic source array system module for underwater operation which can be installed on a motorized boat |
Dennis R. Courtright |
2005-03-22 |
| 6771561 |
Sonar system especially for shallow water application such as in littoral environments |
Dennis R. Courtright, David P. Hollinger |
2004-08-03 |
| 6606958 |
Towed acoustic source array system for marine applications |
— |
2003-08-19 |
| 6378951 |
Vibratory pavement breaker |
Dennis R. Courtright |
2002-04-30 |
| 6185156 |
Underwater acoustic impulse source |
— |
2001-02-06 |
| 6181646 |
Geophysical exploration system using seismic vibrator source which provides a composite sweep |
David P. Hollinger |
2001-01-30 |
| 5841733 |
Acoustic source array system for underwater operation |
David C. Charvoz, Dennis R. Courtright |
1998-11-24 |
| 5646909 |
Pneumatic gun for rapid repetitive acoustic firing |
— |
1997-07-08 |
| 5646910 |
Pneumatic gun for rapid repetitive firing |
— |
1997-07-08 |
| 5212490 |
Echo ranging system for detecting velocity and range of targets using composite doppler invariant-like transmissions with suppression of false targets |
David E. Nelson |
1993-05-18 |
| 4753316 |
Seismic source |
Roger L. Selsam |
1988-06-28 |
| 4718970 |
Apparatus for stress relief and edge sealing of welded joints in plastic parts |
David W. Durfee |
1988-01-12 |
| 4695987 |
Hydroacoustic apparatus |
— |
1987-09-22 |
| 4663206 |
Stress relief and edge sealing of welded joints in plastics parts |
David W. Durfee |
1987-05-05 |
| 4632214 |
Seismic source for use underwater |
— |
1986-12-30 |
| 4601768 |
Method and apparatus for treating plastic welds to relieve stresses therein |
David W. Durfee |
1986-07-22 |
| 4569412 |
Seismic source |
Roger L. Selsam |
1986-02-11 |
| 4348943 |
Hydraulic press apparatus |
— |
1982-09-14 |
| 4313192 |
Optical transducer array system |
David E. Nelson |
1982-01-26 |
| 4294513 |
Optical sensor system |
David E. Nelson |
1981-10-13 |
| 4207962 |
Methods and apparatus for use in generating and transmitting acoustic signals |
— |
1980-06-17 |
| 4187917 |
Pile driver |
— |
1980-02-12 |