Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253805 | Apparatus and improved method for changing automatic transmission fluid in motor vehicles | Harold E. Erwin, Michael Jason Erwin | 2001-07-03 |
| 6179018 | Apparatus and improved method for changing automatic transmission fluid in motor vehicles | Harold E. Erwin, Michael Jason Erwin | 2001-01-30 |