Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933530 | Method for repairing a refrigeration sealed system | John A. Nelson | 1990-06-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933530 | Method for repairing a refrigeration sealed system | John A. Nelson | 1990-06-12 |