Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5946921 | Method for repairing HFC refrigerant system | John Joseph Hellmueller, Jr., Joseph B. Hofelich | 1999-09-07 |
| 4811567 | Method for testing the operability of a refrigerant system | Stephen M. Bakanowski | 1989-03-14 |