Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5735636 | Method for installing an expansion joint in a concrete dam | Louis Dubreuil | 1998-04-07 |
| 5570934 | Traction boring device using multiple trepans for producing large cuts in concrete works and the like and method of producing cuts | Louis Dubreuil | 1996-11-05 |
| 5449248 | Sealing device for expansion joints of concrete dams and method for installing same | Louis Dubreuil | 1995-09-12 |