Patents/Inventors

Sihua Ling

GuangdongCN2 patents

5 Patents

USD10964742025
Escalator Smart Traffic Flow Lighting Device
OTIS ELEVATOR COMPANY
0 cites
USD10969412025
Escalator Smart Traffic Flow Lighting Device
OTIS ELEVATOR COMPANY
0 cites
USD10969422025
Escalator Smart Traffic Flow Lighting Device
OTIS ELEVATOR COMPANY
0 cites
USD10969432025
Escalator Smart Traffic Flow Lighting Device
OTIS ELEVATOR COMPANY
0 cites
USD10394092024
Escalator Smart Traffic Flow Lighting Device
OTIS ELEVATOR COMPANY
0 cites