Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6112485 | Post-panel connector arrangement | Peter J. Beyer, Thomas J. Osterman | 2000-09-05 |
| 6007170 | Knock-down vertical file | Frederick C. Liebertz | 1999-12-28 |
| 5853237 | Base for lateral file | Thomas J. Osterman | 1998-12-29 |
| D317384 | Dispenser or similar article | — | 1991-06-11 |
| 4887549 | Dog training apparatus | — | 1989-12-19 |