Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5981061 | Joint sealing tape for asphalted areas and joint sealing systems based on the same | — | 1999-11-09 |
| 4564421 | Ascension pipe for coke ovens | Theo Koddenberg | 1986-01-14 |