Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854776 | Process and apparatus for lining a tunnel with concrete | Volker Hentschel, Clemens Versteegen, Siegmund Babendererde | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854776 | Process and apparatus for lining a tunnel with concrete | Volker Hentschel, Clemens Versteegen, Siegmund Babendererde | 1989-08-08 |