Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4191497 | Mine roof supports | Helmut Poklekowski, Klaus Seeberger | 1980-03-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4191497 | Mine roof supports | Helmut Poklekowski, Klaus Seeberger | 1980-03-04 |