DL

Duan Liang

OE Otis Elevator: 1 patents #88 of 253Top 35%
Overall (2021): #469,035 of 548,734Top 90%
1
Patents 2021

Issued Patents 2021

Patent #TitleCo-InventorsDate
11124386 Safety brake configuration for elevator application Richard N. Fargo, Tahany Ibrahim El-Wardany, James M. Draper, Xiaodong Luo, Joe J. Liou 2021-09-21