Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356972 | Irrigation system and constant volume sprinkler head therefor | — | 1982-11-02 |
| 4350300 | Irrigation system and constant volume sprinkler head therefor | — | 1982-09-21 |
| 4336908 | Irrigation system and volume control valve therefor | — | 1982-06-29 |
| 4310122 | Irrigation system and volume control valve therefor | — | 1982-01-12 |