Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6536778 | Resilient metallic gasket | Vincent S. Behil, Jon A. Cox | 2003-03-25 |
| 5530991 | Block and tackle window balance | Richard S. deNormand, Norman R. Westfall | 1996-07-02 |
| 5199219 | Window jamb liner | Norman R. Westfall, Richard S. deNormand | 1993-04-06 |
| 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 |