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Patent applications and USPTO patent grants for Jeffers; Robert K..The latest application filed is for "automatic switch for marine sounders".
Patent | Date |
---|---|
Masthead control system Grant 7,739,973 - Boucher , et al. June 22, 2 | 2010-06-22 |
Automatic switch for marine sounders Grant 7,505,363 - Jeffers March 17, 2 | 2009-03-17 |
Automatic Switch For Marine Sounders App 20070237028 - Jeffers; Robert K. | 2007-10-11 |
Masthead control system App 20060236910 - Boucher; Stephen G. ;   et al. | 2006-10-26 |
Acoustic deterrent system and method Grant 5,610,876 - Jeffers March 11, 1 | 1997-03-11 |
Guided flow marine speedometer including angularly shaped housing for guiding water to a paddlewheel sensor at that angle Grant 5,606,253 - Boucher , et al. February 25, 1 | 1997-02-25 |
Marine instrument Grant 4,644,787 - Boucher , et al. February 24, 1 | 1987-02-24 |
Marine instrument Grant 4,555,938 - Boucher , et al. December 3, 1 | 1985-12-03 |
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