Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6554047 | Guide track assemblies and mounting brackets for upward acting doors | Joseph J. Mondragon, Robert Wright, James Wendall Compton, Leroy G. Krupke, Robert S. Cogger | 2003-04-29 |
| 6527035 | Guide track assemblies and mounting brackets for upward acting doors | Celestino Duran, David M. Wells | 2003-03-04 |
| 6408926 | Sectional door reinforcement system and method | Ted Lefkovits, Michele Rene Womack | 2002-06-25 |
| 6134835 | Counterbalance system for upward acting door | Leroy G. Krupke, D. Scott Boucher, John E. Scates | 2000-10-24 |
| 6125582 | Spring winder support for door counterbalance system | Joseph J. Mondragon, Leroy G. Krupke, Michel Beaudoin, Erin J. BITTNER | 2000-10-03 |