Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228470 | Self draining hose connection dual check valve back flow preventer | John Lair, James F. Delahunty, Richard J. Holliday | 1993-07-20 |
| 4712575 | Self-draining hose connection vacuum breaker and backflow preventer | John Lair, Richard J. Holliday | 1987-12-15 |
| 4253304 | Thermal element | W. Doyle Lamb | 1981-03-03 |
| 4227544 | Fire hydrant with improved shoe and valve | — | 1980-10-14 |