Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870393 | Method and apparatus for determining generator ventilation system failure using two differential pressure sensors | Owen R. Snuttjer | 1989-09-26 |
| 4852850 | Valve system with adjustable seating force | Gilbert F. Hyde | 1989-08-01 |