Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365937 | Adjustable pitch propeller drive | Harold L. Hiebert, deceased | 1982-12-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365937 | Adjustable pitch propeller drive | Harold L. Hiebert, deceased | 1982-12-28 |