Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702282 | Reinforced conventional concrete pipe having an evenly distributed steel wire reinforcement | Sergio Marchesi | 1987-10-27 |
| 4633568 | Method of manufacturing reinforced concrete pipe having an evenly distributed steel wire reinforcement | Sergio Marchesi | 1987-01-06 |
| 4273740 | Process and apparatus for manufacturing single piece railroad ties of prestressed concrete | Sergio Marchesi | 1981-06-16 |