Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6357577 | Conveyor arrangements with multiple shaftless screws | — | 2002-03-19 |
| 6187180 | Apparatus for screening | — | 2001-02-13 |
| 6096201 | Apparatus for separation | — | 2000-08-01 |
| 5910243 | Displacement device | — | 1999-06-08 |
| 5676827 | Apparatus for discharge of sediment from a tank | — | 1997-10-14 |
| 5562029 | Conveying and compacting apparatus having a shaftless spiral in a casing with drainage openings | — | 1996-10-08 |
| 5421251 | Apparatus for compacting material | — | 1995-06-06 |
| 5368153 | Transportation device having a driven shaftless spiral freely fitted in a casing and resting thereon | — | 1994-11-29 |
| 5337658 | Conveying and compacting apparatus having a shaftless spiral in a casing with drainage openings | — | 1994-08-16 |
| D326944 | Section of a shaftless spiral conveyor | — | 1992-06-09 |
| 5092453 | Helical conveyor | — | 1992-03-03 |
| D323414 | Section of a shaftless spiral conveyor | — | 1992-01-21 |
| 5000307 | Transportation device | — | 1991-03-19 |
| 4984477 | Driving device | — | 1991-01-15 |
| 4961864 | Separating device | — | 1990-10-09 |
| 4922768 | Driving device | — | 1990-05-08 |
| 4779528 | Floating shaftless helix screw press | — | 1988-10-25 |