Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358888 | Automatic tool changer with internal tool storage magazine | Frank Zankl, Alvin L. Cleek | 1982-11-16 |
| 4238034 | Automatic tool changer for machine tool | Richard Johnstone, Russell B. Clegg | 1980-12-09 |