Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |