QC

QingXi Cai

OE Otis Elevator: 1 patents #64 of 199Top 35%
Overall (2024): #307,309 of 561,600Top 55%
1
Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D1039409 Escalator smart traffic flow lighting device Lilong Shi, Shunqiang Zhou, Sihua Ling, Denghui Zhang 2024-08-20