Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592845 | Sludge belt method of clarifying a liquid charged with solid matter | Pierre Lejeune | 1986-06-03 |
| 4377937 | Method and apparatus for extracting heat from a powdered water-absorbant substance at less than 100.degree. C. | Serge Alquier | 1983-03-29 |