Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839961 | Gripping device | — | 1989-06-20 |
| 4830420 | Gripping device | Johannes T. A. van de Ven | 1989-05-16 |
| 4822091 | Gripping device | Johannes T. A. van de Ven | 1989-04-18 |
| 4810018 | Gripping device | Johannes T. A. van de Ven | 1989-03-07 |