Tanner; Douglas J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tanner; Douglas J..The latest application filed is for "check valve control unit".
- Tanner; Douglas J. - Sartell MN
- Tanner; Douglas J. - St. Cloud MN
- Tanner; Douglas J. - Rice MN
| Patent | Date |
|---|---|
| Check valve control unit Grant 10,323,759 - Tanner , et al. | 2019-06-18 |
| Check Valve Control Unit App 20170089475 - Tanner; Douglas J. ; et al. | 2017-03-30 |
| Pneumatic volume booster for valve positioner Grant 6,668,848 - Lafler , et al. December 30, 2 | 2003-12-30 |
| Pneumatic volume booster for valve positioner Grant 6,659,247 - Lafler , et al. December 9, 2 | 2003-12-09 |
| Position detection for rotary control valves Grant 6,484,751 - Lafler , et al. November 26, 2 | 2002-11-26 |
| Pneumatic volume booster for valve positioner Grant 6,357,335 - Lafler , et al. March 19, 2 | 2002-03-19 |
| Pneumatic volume booster for valve positioner App 20020029811 - Lafler, Lawrence R. ; et al. | 2002-03-14 |
| Pneumatic volume booster for valve positioner App 20020007727 - Lafler, Lawrence R. ; et al. | 2002-01-24 |
| Position detection for rotary control valves App 20010027812 - Lafler, Lawrence R. ; et al. | 2001-10-11 |
| Position detection for rotary control valves Grant 6,244,296 - Lafler , et al. June 12, 2 | 2001-06-12 |
| Mechanical coupling particularly adapted for coupling a valve and actuator Grant 5,176,464 - Tanner January 5, 1 | 1993-01-05 |
| Valve actuator coupling Grant 4,558,605 - Tanner December 17, 1 | 1985-12-17 |
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