Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836239 | Water cooling tower and water level control system therefor | — | 1989-06-06 |
| 4724552 | Apparatus for automatically maintaining a predetermined desired level of water in a swimming pool, and the like | David W. Kinkead | 1988-02-16 |
| 4686718 | Method and apparatus for automatically maintaining a predetermined desired level of water in a swimming pool, and the like | David W. Kinkead | 1987-08-18 |