Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222712 | Multiple displacement pump system with bypass controlled by inlet pressure | Lowell D. Hansen | 1980-09-16 |
| 4183723 | Rotary vane pump having multi-independent outputs due to stator surfaces of different contour | Lowell D. Hansen | 1980-01-15 |