Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658794 | Guide assembly for a tilt-out sash window | Thomas Hänsel, Julie K. Earp, Charles H. Graham, William M. Martz | 2003-12-09 |
| 6523307 | Balance system for sash window assembly | James G. Prete, Richard A. Gardner, Steven E. Schultz, Mark V. Murphy, Vincent Eslick | 2003-02-25 |
| 4881765 | Exit device having length adjustment means for its concealed vertical rods | — | 1989-11-21 |
| 4796931 | Exit device having adjustable backset | — | 1989-01-10 |