Groninga; Kirk
Patent Applications and Registrations
Patent applications and USPTO patent grants for Groninga; Kirk.The latest application filed is for "tilting duct compound helicopter".
- Groninga; Kirk - Keller TX
| Patent | Date |
|---|---|
| Tilting Duct Compound Helicopter App 20220204159 - Robertson; Daniel ; et al. | 2022-06-30 |
| Tilting duct compound helicopter Grant 11,148,799 - Robertson , et al. October 19, 2 | 2021-10-19 |
| Tilting Duct Compound Helicopter App 20200164975 - Robertson; Daniel ; et al. | 2020-05-28 |
| Tiltrotor aircraft with forward-swept wings Grant D739,335 - Robertson , et al. September 22, 2 | 2015-09-22 |
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