Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4477228 | Injection molded propeller | Brian J. Duffy, Eugene J. Gratz, Steven E. Potter | 1984-10-16 |
| 4445652 | Adjustable rocket thrust alignment device | Claude W. Engelke, Dale W. Brees | 1984-05-01 |
| 4414171 | Method of making an injection molded propeller | Brian J. Duffy, Eugene J. Gratz, Steven E. Potter | 1983-11-08 |