Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928812 | Conveyor belt of PVC provided with a compound layer of reinforcing material and a process of weaving said reinforcing layer | Freerk R. van Calker | 1990-05-29 |
| 4877126 | Conveyor belt | Freerk R. van Calker, Pieter J. M. Kopmels | 1989-10-31 |
| 4421439 | Supporting fabric for bearing bulk material and a method of building a road, dike or dam embankment | Gerrit den Hoedt | 1983-12-20 |