DG

David L. Groen

GA Groem Brothers Aviation: 2 patents #4 of 9Top 45%
GA Groen Aeronautics: 2 patents #2 of 3Top 70%
📍 Murray, UT: #32 of 315 inventorsTop 15%
🗺 Utah: #2,270 of 19,430 inventorsTop 15%
Overall (All Time): #554,290 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11827357 Precision delivery vehicle including folding wings and deployable, unpowered rotor 2023-11-28
11117666 Precision delivery vehicle 2021-09-14
9611037 Use of auxiliary rudders for yaw control at low speed 2017-04-04
9604722 Mission-adaptive rotor blade 2017-03-28
8960594 Use of auxiliary rudders for yaw control at low speed 2015-02-24
8944365 Mission-adaptive rotor blade 2015-02-03
5544844 Autogyro aircraft Henry J. Groen 1996-08-13
5304036 Autogyro aircraft Henry J. Groen 1994-04-19
5301900 Autogyro aircraft Henry J. Groen 1994-04-12