Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7589134 | Adhesive filled with surface-treated chalk and soot | Ueli Pfenninger, Ursula Stadelmann | 2009-09-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7589134 | Adhesive filled with surface-treated chalk and soot | Ueli Pfenninger, Ursula Stadelmann | 2009-09-15 |