Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349229 | Longwall mineral mining installation | Herbert Beyer | 1982-09-14 |
| 4327946 | Apparatus for controlling the position of a mineral mining machine | Rudiger Kirchbrucher | 1982-05-04 |
| 4324510 | Apparatus for supporting a mine roof support assembly | Hans-Joachim Dreher | 1982-04-13 |