Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401478 | Process for the handling and heat treatment of cast iron or steel pipes and tubes | Michel Pierrel | 1983-08-30 |
| 4353531 | Process and installation for the handling and heat treatment of cast iron or steel pipes and tubes | Michel Pierrel | 1982-10-12 |