Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9457994 | Method of assembling an elevator machine frame | Zbigniew Piech, Stephen R. Nichols, Patricia L. Driesch, Benjamin J. Watson | 2016-10-04 |
| 8776953 | Magnetic elevator door coupler | Hakki Han, Zbigniew Piech, David J. Lanesey | 2014-07-15 |
| 8631907 | Elevator machine frame | Zbigniew Piech, Stephen R. Nichols, Patricia L. Driesch, Benjamin J. Watson | 2014-01-21 |