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Patent applications and USPTO patent grants for Shiffler; Mark E..The latest application filed is for "unmanned sea surface vehicle having a personal watercraft hull form".
Patent | Date |
---|---|
Unmanned sea surface vehicle having a personal watercraft hull form Grant 5,713,293 - Shiffler , et al. February 3, 1 | 1998-02-03 |
Multi-stage fluid flow control device Grant 5,458,149 - Shiffler October 17, 1 | 1995-10-17 |
Rotary hydraulic servo or throttle valve Grant 5,242,150 - Shiffler , et al. September 7, 1 | 1993-09-07 |
Variable breadth impeller that provides a specific shutoff head Grant 5,211,530 - Shiffler May 18, 1 | 1993-05-18 |
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