DL

Duan Liang

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #2,750,380 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

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