Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10364128 | Method of installing a vertically extending member in an elevator system | Richard S. Blakelock, Troy R. Chicoine, Douglas B. LaBrecque, Craig A. Buckley, William J. Derwin | 2019-07-30 |
| 9604823 | Assembly for roping an elevator | Richard S. Blakelock, Troy R. Chicoine, Douglas B. LaBrecque, Craig A. Buckley, William J. Derwin | 2017-03-28 |
| 8752262 | Supplemental elevator brake and retrofitting installation procedure | Daniel B. Davis, III, Kenneth V. Allen, Jesse R. Richter, Michael P. Keenan, Gregory M. Oseep +4 more | 2014-06-17 |
| 5819877 | Elevator evacuation deterrent device | James A. Rivera, Richard E. Kulak, Michael J. Tracey, Duane R. Stupienski, Blair J. Cohen | 1998-10-13 |