Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875738 | Arm-supported cutting roll with effective length pivotally adjustable along mining face | Erich Brandl | 1989-10-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875738 | Arm-supported cutting roll with effective length pivotally adjustable along mining face | Erich Brandl | 1989-10-24 |