Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4895413 | Cutter roller with spraying nozzle | Norbert B. Weikert | 1990-01-23 |
| 4498707 | Cutting roller | Norbert B. Weikert | 1985-02-12 |
| 4491370 | Rotary cutting roller | Norbert B. Weikert | 1985-01-01 |
| 4471997 | Method for depositing dust during hydraulicking of minerals by a cutter roller of a mining machine | — | 1984-09-18 |
| 4451092 | Cutting roller | Norbert B. Weikert | 1984-05-29 |
| 4437707 | Spraying nozzle arrangement | Gunter Dlugosch | 1984-03-20 |
| 4436346 | Cutting roller for a mining machine | Norbert B. Weikert | 1984-03-13 |
| 4411475 | Cutting drum | Norbert B. Weikert | 1983-10-25 |
| 4249779 | Rotating cutting drum having tapered and curved conveying surface | Norbert B. Weikert | 1981-02-10 |