Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4505295 | Apparatus for inserting a shut-off device laterally into a pipe | Rene A. Quin, Paul Wiet | 1985-03-19 |
| 4476605 | Rotary metal brush for removing submerged anti-corrosive covering and method for using the same | Bruno J. M. de Sivry, Guy Herve, Claude Colas | 1984-10-16 |
| 4425059 | Process for removing a concrete covering | Claude Colas, Guy Herve, Bruno J. M. de Sivry | 1984-01-10 |