Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4710291 | Two-stage apparatus for clarifying liquid charged with solid matter | — | 1987-12-01 |
| 4647372 | Sludge belt apparatus for clarifying liquid charged with solid matter | — | 1987-03-03 |
| 4347140 | Installation for and a method of spreading clayey mud and reclaiming land | Pierre Couratin | 1982-08-31 |
| 4260488 | Device for compacting and draining fluid sludges containing fibrous materials | — | 1981-04-07 |
| 4249828 | Apparatus for maintaining solids in a suspension and a method of using it | — | 1981-02-10 |