Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769960 | Coupler for hanging precast concrete panels from a hoist | Eckart Zipf, Marcel Arteon | 1988-09-13 |
| 4703595 | Coupler for hanging precast concrete panels from a hoist | Eckart Zipf, Marcel Arteon | 1987-11-03 |