Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5415003 | Method for removing original type lubricant from air conditioning system and injecting replacement oil | John T. Bertva | 1995-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5415003 | Method for removing original type lubricant from air conditioning system and injecting replacement oil | John T. Bertva | 1995-05-16 |