Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228470 | Self draining hose connection dual check valve back flow preventer | John Lair, James F. Delahunty, Lawrence F. Luckenbill | 1993-07-20 |
| 4712575 | Self-draining hose connection vacuum breaker and backflow preventer | John Lair, Lawrence F. Luckenbill | 1987-12-15 |