Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5839230 | Window propelling system | Warren Redden | 1998-11-24 |
| 5784831 | Window propelling system | — | 1998-07-28 |
| 5595026 | Window assembly with an internally propelled window unit | Gerald E. Bergum | 1997-01-21 |