Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378668 | Spring applied parking brake assembly having a manual quick release feature | James M. Zemyan | 2002-04-30 |
| 6027180 | Manual empty/load device | William G. Greenaway, James M. Zemyan | 2000-02-22 |