Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6285155 | Pseudo half-step motor drive method and apparatus | Rudolph J. Maske, Peter A. Holst | 2001-09-04 |
| 5439355 | Method and apparatus to test for valve leakage in a pump assembly | Walter L. Jimison, Craig S. Barker | 1995-08-08 |
| 5404748 | Method and apparatus for minimizing hydrodynamic pressure noise interference with a valve leakage test | Walter L. Jimison, Craig S. Barker | 1995-04-11 |