Gambetta; David L
Patent Applications and Registrations
Patent applications and USPTO patent grants for Gambetta; David L.The latest application filed is for "gate valve with lubricated secondary seal".
- Gambetta; David L - Reno NV US
- Gambetta; David L. - Reno NV
- Gambetta; David L. - Vancouver WA
- Gambetta; David L. - Tupelo MI
| Patent | Date |
|---|---|
| Gate valve with lubricated secondary seal Grant 8,408,519 - Ohlson , et al. April 2, 2 | 2013-04-02 |
| Gate valve with lubricated secondary seal Grant 8,056,882 - Ohlson , et al. November 15, 2 | 2011-11-15 |
| Valve assembly having a reinforced valve seat Grant 7,815,170 - Devine, Jr. , et al. October 19, 2 | 2010-10-19 |
| Gate Valve With Lubricated Secondary Seal App 20100224814 - Ohlson; Robert Kent ; et al. | 2010-09-09 |
| Rotary Gate Valve App 20090159827 - Ellis; Johnny W. ; et al. | 2009-06-25 |
| Valve Assembly Having A Reinforced Valve Seat App 20090121173 - Devine, JR.; Donald L. ; et al. | 2009-05-14 |
| Split knife gate valve having a uniformly compressed and constrained resilient gate seat and method for producing the same Grant 5,979,874 - Gambetta , et al. November 9, 1 | 1999-11-09 |
| Knife gate valve with mechanically retained gate seat Grant 5,653,423 - Young , et al. August 5, 1 | 1997-08-05 |
| Gate valve sleeve Grant 5,560,587 - McCutcheon , et al. October 1, 1 | 1996-10-01 |
| Gate valve with improved seal unit Grant 5,338,006 - McCutcheon , et al. August 16, 1 | 1994-08-16 |
| Valve with improved seal Grant 4,623,122 - Gambetta November 18, 1 | 1986-11-18 |
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