Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4763449 | Manhole cover sealing and locking arrangement | Jean-Claude Hauer | 1988-08-16 |
| 4747625 | Branch pipe mounting assembly | Vincent Mignet | 1988-05-31 |
| 4741560 | Seal assembly for connecting two pipe sections | — | 1988-05-03 |
| 4718701 | Pipe coupling apparatus with split ring and clamps | Jean-Pierre Vitel | 1988-01-12 |