Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5199816 | System for isolating a dump | Roland Paurat | 1993-04-06 |
| 5197824 | System for protecting ground water under a dump | Roland Paurat | 1993-03-30 |
| 5180251 | Underground protection underneath a dump | Roland Paurat | 1993-01-19 |
| 4695098 | Excavator, particularly for continuous strip mining of minerals | Roland Paurat | 1987-09-22 |
| 4645266 | Tunnel and gallery excavator | Roland Paurat | 1987-02-24 |
| 4610573 | Tunneling machine | Roland Paurat | 1986-09-09 |
| 4557373 | System for conveying bulk material and people in a mine | Boland Paurat | 1985-12-10 |
| 4499993 | Belt-type bulk-material conveyor for underground use | Roland Paurat | 1985-02-19 |
| 4470635 | Method and apparatus for excavating a tunnel or gallery face | Roland Paurat | 1984-09-11 |
| 4470636 | Mining machine excavator drum having liquid spray control | Roland Paurat | 1984-09-11 |
| 4451089 | Coal-mining machine | Roland Paurat | 1984-05-29 |
| 4278293 | Apparatus for advancing a low-height drift through a subterranean structure | Roland Paurat | 1981-07-14 |
| 4274675 | Shaft-sinking apparatus with milling head and central worm conveyor | Roland Paurat | 1981-06-23 |
| 4247997 | Trench excavating and shoring apparatus | Roland Paurat | 1981-02-03 |
| 4231618 | Tunnel-excavating machine | — | 1980-11-04 |