Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903746 | Adaptor disk for attaching an anti-skid device to a wheel disk or rim | Werner Preusker | 1990-02-27 |
| 4884933 | Adaptor for screwheads and the like | Werner Preusker | 1989-12-05 |