Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4371288 | Fluid impermeable liner for a cavity in the earth | Emilio Ruscelli | 1983-02-01 |
| 4318634 | Non-vibrating collapsible dam | — | 1982-03-09 |
| 4310262 | Collapsible dam and apparatus for raising and lowering the dam | Francesco Calza | 1982-01-12 |
| 4239416 | Lined cavity in the earth | Emilio Ruscelli | 1980-12-16 |
| 4229119 | Liftable and collapsible barrage | Francesco Calza | 1980-10-21 |