Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944558 | Drum cutter-loader for underground mining | Herbert Schupphaus | 1990-07-31 |
| 4189188 | Drum cutter mining machine | Herbert Schupphaus | 1980-02-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944558 | Drum cutter-loader for underground mining | Herbert Schupphaus | 1990-07-31 |
| 4189188 | Drum cutter mining machine | Herbert Schupphaus | 1980-02-19 |