Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7183663 | Precisely controlled flying electric generators | David H. Shepard | 2007-02-27 |
| 7109598 | Precisely controlled flying electric generators III | David H. Shepard | 2006-09-19 |
| 6781254 | Windmill kite | — | 2004-08-24 |
| 4874291 | Rotor arrangement for a rotorcraft | Alan R. Fien, John Blackler | 1989-10-17 |