Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5293799 | Punching and perforating unit with combined punching and perforating cylinders | — | 1994-03-15 |
| 4512561 | Folder unit with means for simultaneous phase shifting of front and rear spiral sets | — | 1985-04-23 |
| 4363270 | Harmonic phasing device for printing press | Howard L. Propheter, Carlton A. Bird | 1982-12-14 |