Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7942289 | Device for closing an opening, particularly a street manhole | Jean-Claude Hauer | 2011-05-17 |
| 7448512 | Device for closing an opening, particularly a man hole | Jean-Claude Hauer | 2008-11-11 |
| 6676332 | Highway device and covering element for such a device | Jean-Claude Hauer | 2004-01-13 |