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Inventors
Fu Qi
Shanghai
CN
3 patents
3 Patents
US12452635
2025
Communication System and Method for Elevator System
OTIS ELEVATOR COMPANY
0 cites
US11939186
2024
Wireless Signal Device, System and Method for Elevator Service Request
OTIS ELEVATOR COMPANY
0 cites
US11708237
2023
Communication for Elevator Service Request
OTIS ELEVATOR COMPANY
0 cites