Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5640828 | Spacer for an insulated window panel assembly | Edward L. Schield | 1997-06-24 |
| 5088258 | Thermal broken glass spacer | Edward L. Schield | 1992-02-18 |
| 5022206 | Entry door system | Edward L. Schield, Marjorie A. Nehiba, Lyn W. Hartl | 1991-06-11 |