Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886033 | Stabilized flow control valve | Joseph T. Betterton, Alfred H. Glover, Chris S. Romanczuk | 1989-12-12 |
| 4807478 | Pressure transducer | Joseph T. Betterton, Alfred H. Glover | 1989-02-28 |