Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828433 | Roof supports | Egon Wojaczek, Klaus Reichelt | 1989-05-09 |
| 4191497 | Mine roof supports | Klaus Seeberger, Gunther Harmsma | 1980-03-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828433 | Roof supports | Egon Wojaczek, Klaus Reichelt | 1989-05-09 |
| 4191497 | Mine roof supports | Klaus Seeberger, Gunther Harmsma | 1980-03-04 |