Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701926 | Backflow prevention device and vacuum breaker for kitchen plumbing | — | 1997-12-30 |
| 5022429 | Valve assembly for plumbing fixture | Pietro Rollini | 1991-06-11 |
| 4953585 | Tub transfer-diverter valve with built-in vacuum breaker and back-flow preventer | Pietro Rollini | 1990-09-04 |