Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4926974 | Elevator car with improved car door clutch | Daphne D'Zurko, Richard H. Pilsbury, J. Warren Barkell, Jr., Karl B. Orndorff | 1990-05-22 |
| 4926975 | Elevator car with improved door lock | — | 1990-05-22 |
| 4620615 | Elevator system | Kim E. Morris | 1986-11-04 |
| 4537286 | Elevator system | Jitendra K. Trivedi | 1985-08-27 |