Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176176 | Non-degrading back pressure regulator | James P. Korzenowski | 1993-01-05 |
| 4887639 | Non-degrading pressure regulator | James P. Korzenowski, Larry J. DeHemmer | 1989-12-19 |
| 4843841 | Energy conserving refrigeration device | William D. Vork | 1989-07-04 |
| 4482972 | Distance sensing apparatus and method | Clarence Lewis, James E. Lewis | 1984-11-13 |
| 4322802 | Control apparatus for adjusting the position of a workpiece | Clarence Lewis, James E. Lewis | 1982-03-30 |