Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868023 | Polyolefin article having permanent indicia thereon | Lawrence D. Schwartz, Philip Wallis, Kenneth M. Winterstein | 1989-09-19 |
| 4834606 | Apparatus for stacking formed articles | Thomas Matthew Burns | 1989-05-30 |