Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6247758 | Longwall coal cutter and loader | — | 2001-06-19 |
| 4955668 | Drum cutter-loader equipped with an auxiliary drum | — | 1990-09-11 |
| 4944558 | Drum cutter-loader for underground mining | Klaus Oberste-Beulmann | 1990-07-31 |
| 4889393 | Drum cutter-loader for underground mining machine | — | 1989-12-26 |
| 4828326 | Shearer loader for underground mining operation | Siegfried Reike | 1989-05-09 |
| 4691967 | Apparatus for controlling the discharge of pressurized liquid from nozzles on a cutting drum of a mining machine | — | 1987-09-08 |
| 4615565 | Tunnel or road header | — | 1986-10-07 |
| 4588230 | Control for mining machine | — | 1986-05-13 |
| 4483568 | Advancing apparatus for a multi-unit mining machine | Heinz Pulger | 1984-11-20 |
| 4465320 | Cutter drum assembly for longwall mining machines | — | 1984-08-14 |
| 4451091 | Track for a longwall mining machine | Volker Knorr | 1984-05-29 |
| 4451090 | Advancing apparatus for coal-mining machine in underground mine | — | 1984-05-29 |
| 4394053 | Nozzle holder for cutter drum in longwall mining machinery | — | 1983-07-19 |
| 4265488 | Track on a conveyor for a mining machine | Hugo Klimeck | 1981-05-05 |
| 4189188 | Drum cutter mining machine | Klaus Oberste-Beulmann | 1980-02-19 |