Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4456573 | Method for the production of aged and expanded polystyrene panels | Roberto Colombo | 1984-06-26 |
| 4222729 | Screw extruder for thermoplastic synthetic foams | Roberto Colombo | 1980-09-16 |