Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7955658 | Building material composition, especially bitumen-free sealant | Manfred Grasse, Udo Windhövel, Caroline Pfefferle | 2011-06-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7955658 | Building material composition, especially bitumen-free sealant | Manfred Grasse, Udo Windhövel, Caroline Pfefferle | 2011-06-07 |