Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446321 | Method for producing pipes to be connected in a double-wall piping system and implementing machine | Philippe Marchal | 2002-09-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446321 | Method for producing pipes to be connected in a double-wall piping system and implementing machine | Philippe Marchal | 2002-09-10 |