Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7942289 | Device for closing an opening, particularly a street manhole | Jean-Claude Hauer | 2011-05-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7942289 | Device for closing an opening, particularly a street manhole | Jean-Claude Hauer | 2011-05-17 |