Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4368782 | On/off sprinkler head with temperature responsive exhaust port valve | — | 1983-01-18 |
| 4367861 | Installation control valves | Richard J. Holker | 1983-01-11 |
| 4298068 | Heat sensitive release devices | — | 1981-11-03 |
| 4220452 | Detection of gases | — | 1980-09-02 |
| 4205820 | Control valves | — | 1980-06-03 |