Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903810 | Clutch shoe construction and method of making same | David L. Heldt | 1990-02-27 |
| 4736503 | Clutch shoe construction and method of making same | David L. Heldt | 1988-04-12 |