Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6993873 | Building curtain wall mullion and sill assembly | James P. Clark, Stanley J. Mayhew | 2006-02-07 |
| 6715248 | Building curtain wall with sill anchor assembly | — | 2004-04-06 |
| 6226940 | Mullion connection system | James P. Clark, Jarett Gibson | 2001-05-08 |
| 6158182 | Building curtain wall | — | 2000-12-12 |
| 5930955 | Door assembly | — | 1999-08-03 |
| 5469665 | Threshold system | — | 1995-11-28 |
| 5319882 | Entrance system | — | 1994-06-14 |
| 5058344 | Wall panel system | — | 1991-10-22 |
| 5036637 | Rolled metal building system | — | 1991-08-06 |
| 4899508 | Panel and glass curtain wall system | — | 1990-02-13 |
| 4773193 | Flexible joint building system | William W. Watson | 1988-09-27 |
| 4644717 | Curtain wall valve system | — | 1987-02-24 |
| 4194776 | Security astragal for double door assembly | — | 1980-03-25 |