Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7945994 | Two piece carrier and balance assembly | Douglas Zinter, Wilbur James Kellum, III, Richard S. deNormand | 2011-05-24 |
| 6672010 | Casement window operator with adjustable bushing | Steven Anthony Gledhill | 2004-01-06 |
| D476882 | Casement window operator | Steven Anthony Gledhill | 2003-07-08 |
| D457422 | Housing | Steven Anthony Gledhill | 2002-05-21 |