Duffin; Don D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duffin; Don D..The latest application filed is for "nutating srpinkler head".
- Duffin; Don D. - Paul ID US
| Patent | Date |
|---|---|
| Sprinkler braking mechanism Grant 11,358,160 - Duffin , et al. June 14, 2 | 2022-06-14 |
| Nutating sprinkler head Grant 11,213,836 - Duffin , et al. January 4, 2 | 2022-01-04 |
| Nutating Srpinkler Head App 20200215556 - DUFFIN; DON D. ; et al. | 2020-07-09 |
| Sprinkler Braking Mechanism App 20200078805 - Duffin; Don D. ; et al. | 2020-03-12 |
| Rudder directed tube delivery sprinkler head Grant 10,201,818 - Duffin , et al. Feb | 2019-02-12 |
| Irrigation Saddle, Adapter, And Cap App 20180263199 - Duffin; Don D. ; et al. | 2018-09-20 |
| Fast Acting Valve App 20180066764 - DUFFIN; ROGER M. ; et al. | 2018-03-08 |
| Rudder Directed Tube Delivery Sprinkler Head App 20170120265 - DUFFIN; DON D. ; et al. | 2017-05-04 |
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