Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7931421 | Grating | Hans-Julius Ahlmann | 2011-04-26 |
| 6945733 | Cover for a drainage device | Manfred Rinckens | 2005-09-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7931421 | Grating | Hans-Julius Ahlmann | 2011-04-26 |
| 6945733 | Cover for a drainage device | Manfred Rinckens | 2005-09-20 |