Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640238 | Oiltight hydraulic tappet for controlling an internal combustion engine valve | Franco Colanzi, Silvio Ragazzoni | 1987-02-03 |
| 4632075 | Oiltight hydraulic tappet for controlling an internal combustion engine valve | Franco Colanzi, Silvio Ragazzoni | 1986-12-30 |
| 4610225 | Hydraulic tappet for controlling an internal combustion engine valve | Silvio Ragazzoni, Franco Colanzi | 1986-09-09 |