Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889162 | Fluid control valve | John A. Hird | 1989-12-26 |
| 4889165 | Water supply valves | John A. Hird | 1989-12-26 |
| 4865076 | Valves for controlling water supply | Jeffrey Chih-Hou Lowe | 1989-09-12 |