Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6041589 | Asymmetric turboprop booster | Rollin George Giffin | 2000-03-28 |
| RE34207 | Counterrotating aircraft propulsor blades | Sidney B. Elston, III, Wu-Yang Tseng, Martin C. Hemsworth | 1993-03-30 |
| 4971641 | Method of making counterrotating aircraft propeller blades | Sidney B. Elston, III, Wu-Yang Tseng, Martin C. Hemsworth | 1990-11-20 |
| 4784575 | Counterrotating aircraft propulsor blades | Sidney B. Elston, III, Wu-Yang Tseng, Martin C. Hemsworth | 1988-11-15 |