Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5072620 | Stamping tool | Ronald C. Hill, Anthony Marzullo | 1991-12-17 |
| 5062337 | Indexable multi-tool for punch press | Gary E. Johnson | 1991-11-05 |
| 5048385 | Indexable multi-tool for punch press | Ronald C. Hill | 1991-09-17 |