Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11970368 | Elevator system belt | Mark R. Gurvich | 2024-04-30 |
| 11673769 | Elevator monitoring using vibration sensors near the elevator machine | Sandeep Sudi, Michael C. Lang | 2023-06-13 |
| 11377323 | Retrofitting an elevator machine with primary and secondary braking | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2022-07-05 |
| 11299374 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2022-04-12 |
| 10737908 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2020-08-11 |
| 10618775 | Retrofitting an elevator machine with primary and secondary braking | Daniel B. Davis, III, Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard +5 more | 2020-04-14 |
| 9884744 | Ropeless high-rise elevator installation approach | Tadeusz Pawel Witczak, Zbigniew Piech | 2018-02-06 |
| 9776832 | Self-propelled cargo lift for elevator systems | Tadeusz Pawel Witczak, Richard N. Fargo | 2017-10-03 |
| 9365395 | Elevator load bearing member | Richard N. Fargo, Jun Ma, Mark R. Gurvich | 2016-06-14 |
| 8556040 | Elevator load bearing member | Richard N. Fargo, Jun Ma, Mark R. Gurvich | 2013-10-15 |