Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875833 | Pumping of high viscosity materials | Michel Canaud | 1989-10-24 |
| 4822649 | Multiple glazing, method for obtaining same and device for using said method | Michel Canaud | 1989-04-18 |