Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678412 | Method for changing lubricant types in refrigeration or air conditioning machinery using lubricant overcharge | John J. Byrne, Robert Yost | 1997-10-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678412 | Method for changing lubricant types in refrigeration or air conditioning machinery using lubricant overcharge | John J. Byrne, Robert Yost | 1997-10-21 |