Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863312 | Underground leachate and pollutant drainage barrier system | — | 1989-09-05 |
| 4741644 | Environmental cut-off and drain | Giosue Miotti | 1988-05-03 |
| 4601615 | Environmental cut-off for deep excavations | — | 1986-07-22 |