Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244297 | Process for manufacturing pencil by tri-extrusion and the produced pencil having an intermediate protective casing | Jacques Bachelet, Philippe Chavatte, Guy Chochoy, Jose Duez, Didier Lange | 1993-09-14 |