Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885871 | Audibly locking shoe system for take-out window | Norman R. Westfall, John I. Habbersett | 1989-12-12 |
| 4799333 | Lock shoe system for take-out window | Norman R. Westfall, John I. Habbersett | 1989-01-24 |