Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10978262 | Reach tool for use in low voltage applications | Benjamin Alan Browne, Robert Rodriguez, Ryan N. Keane, Kevin J. Dix | 2021-04-13 |
| 10364128 | Method of installing a vertically extending member in an elevator system | Valery Sheynkman, Richard S. Blakelock, Troy R. Chicoine, Douglas B. LaBrecque, William J. Derwin | 2019-07-30 |
| 9604823 | Assembly for roping an elevator | Valery Sheynkman, Richard S. Blakelock, Troy R. Chicoine, Douglas B. LaBrecque, William J. Derwin | 2017-03-28 |
| 8714537 | Lifting device clamp having a curvilinear surface | Jeffrey A. Smith, William J. Derwin, Jeffrey Dickinson, John E. Cegelka | 2014-05-06 |
| 7857115 | Device for working on an escalator | Douglas B. LeBrecque, Troy R. Chicoine, Thomas R. Charney, Richard S. Blakelock | 2010-12-28 |