Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6035991 | Blocked slot clutch plate lining | John Willwerth | 2000-03-14 |
| 6019205 | Method and apparatus for lined clutch plate | John Willwerth | 2000-02-01 |
| 5776288 | Method and apparatus for lined clutch plate | Oscar Stefanutti, John Willwerth | 1998-07-07 |