Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392397 | Method of producing a drawing die | Adrianus R. C. Engelfriet, Adriaan J. G. Op Het Veld | 1983-07-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392397 | Method of producing a drawing die | Adrianus R. C. Engelfriet, Adriaan J. G. Op Het Veld | 1983-07-12 |