Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227679 | Hoist with two or more hoisting units | Fred Wiggershaus | 1980-10-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227679 | Hoist with two or more hoisting units | Fred Wiggershaus | 1980-10-14 |