Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4768940 | Tube wall thickness measuring device and extrusion apparatus with the device | — | 1988-09-06 |
| 4217935 | Fiber reinforced plastic pipe part | Mannes Grendelman, Leo A. A. van der Kemp | 1980-08-19 |