Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844112 | Electrically operated valve assembly | Wesley S. Swanson, Edward D. Hurst | 1989-07-04 |
| 4817914 | Electromagnetic valve assembly | Wesley S. Swanson | 1989-04-04 |
| 4815497 | Valve assembly and flow control therefor | — | 1989-03-28 |