Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521354 | Method and mold for fabricating an aerodynamic airframe structure | Claude W. Engelke, Gerald E. Sutton | 1985-06-04 |
| 4477228 | Injection molded propeller | Brian J. Duffy, Eugene J. Gratz, Royal A. Power | 1984-10-16 |
| 4414171 | Method of making an injection molded propeller | Brian J. Duffy, Eugene J. Gratz, Royal A. Power | 1983-11-08 |