BX

Bi Xiong

OE Otis Elevator: 2 patents #33 of 284Top 15%
Overall (2022): #175,043 of 548,613Top 35%
2
Patents 2022

Issued Patents 2022

Patent #TitleCo-InventorsDate
11465880 Elevator maintenance space projection systems 2022-10-11
11292694 Elevator guide rail support assemblies 2022-04-05