Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863351 | Airscrew or propeller for propelling an aircraft | Hans Fischer | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863351 | Airscrew or propeller for propelling an aircraft | Hans Fischer | 1989-09-05 |