Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883220 | Continuous partially preprinted web for heat sealed envelope construction | — | 1989-11-28 |
| 4850947 | Lock device for manifold forms | Robert A. Perry, Raymond S. Kubicki | 1989-07-25 |