Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D398639 | Mirror for rotary and straight-tracked card files | — | 1998-09-22 |
| 5005458 | Low cost punch mechanism | — | 1991-04-09 |
| 4917523 | Card file mounting member | John Patrick Merrick | 1990-04-17 |
| 4869143 | Card file punch | John Patrick Merrick | 1989-09-26 |