BY

Byeong Sam Yoo

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #2,959,493 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9731941 Braking device for a door operator Jinkoo Lee, Jung Sam Kim, Hansoo Shim, Guohong Hu, Mark S. Thompson 2017-08-15