Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7415797 | Impact resistant tilt window assembly | Cynthia Dotson, Thomas D. Riggs, Charles D. Kownacki, Jimmie Daniels, Mark B. Marvin +3 more | 2008-08-26 |
| 6749797 | One-piece injection molded window frame and sash | Charles D. Kownacki, Craig Lawson, Charline W. Crooks | 2004-06-15 |