Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11807493 | Retrofitted hoist machine | Christopher H. Koenig, Barry G. Blackaby, Gregory M. O'Seep, John Eschenbrenner, Jesse R. Richter +1 more | 2023-11-07 |
| 11377323 | Retrofitting an elevator machine with primary and secondary braking | Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more | 2022-07-05 |
| 11299374 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more | 2022-04-12 |
| 10737908 | Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine | Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more | 2020-08-11 |
| 10625984 | Counterweight for elevator system | Bruce St. Pierre, Bruce P. Swaybill | 2020-04-21 |
| 10618775 | Retrofitting an elevator machine with primary and secondary braking | Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more | 2020-04-14 |
| 8752262 | Supplemental elevator brake and retrofitting installation procedure | Valery Sheynkman, Kenneth V. Allen, Jesse R. Richter, Michael P. Keenan, Gregory M. Oseep +4 more | 2014-06-17 |