Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7735709 | Apparatus and method for joining pipe ends together | Cornelis van Zandwijk | 2010-06-15 |
| 7399143 | Method for making a channel in the ground, excavating device for making a channel in the ground, assembly comprising an excavating device and a construction element | Cornelis van Zandwijk | 2008-07-15 |
| 6385868 | Jet excavating device | Rogier Cristian Koene, Rokus Van Den Bout, Cornelius Van Zandwijk | 2002-05-14 |