Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347021 | Mine roof supports | Burckhardt Elsner | 1982-08-31 |
| 4327946 | Apparatus for controlling the position of a mineral mining machine | Kunibert Becker | 1982-05-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347021 | Mine roof supports | Burckhardt Elsner | 1982-08-31 |
| 4327946 | Apparatus for controlling the position of a mineral mining machine | Kunibert Becker | 1982-05-04 |