Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7198223 | Ultralight coaxial rotor aircraft | Arthur Phelps, Dwaine Barnes, Elwood G. Norris, Emitt Wallace | 2007-04-03 |
| 6886777 | Coaxial helicopter | — | 2005-05-03 |
| 4671572 | Adjustable chair having roller cam adjustment mechanism | Ronald L. Young, David Brandt | 1987-06-09 |
| 4588226 | Adjustable chair for aircraft and the like | Ronald L. Young, David Brandt | 1986-05-13 |