LC

Lifei Cheng

OE Otis Elevator: 1 patents #88 of 253Top 35%
Overall (2021): #361,776 of 548,734Top 70%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11078050 Speed detection device and passenger conveyer device Zhaoxia Hu 2021-08-03