Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986168 | Piston and multilayer piston ring set | Christophe Geoffroy, Lloyd M. Forster | 1991-01-22 |
| 4741543 | Piston scraper ring | Christophe Geffroy | 1988-05-03 |
| RE32395 | Piston and piston rings set | Christophe Geffroy | 1987-04-14 |
| 4516481 | Piston and piston rings set | Christophe Geffroy | 1985-05-14 |