Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372175 | Tambour door construction | Normal L. Calhoun | 1994-12-13 |
| 4714158 | Molded tool tray assembly | John P. Oltman, Donald N. Sulentic | 1987-12-22 |
| 4570392 | Storehouse construction | John P. Oltman, Steven J. Kreger | 1986-02-18 |