Patents/Inventors

Fengkun Zhu

TianjinCN4 patents

4 Patents

US125704982026
Brake Static Plate Assembly, Brake and Elevator System
OTIS ELEVATOR COMPANY
0 cites
US122149942025
Brake Disc Releasing Device, Turning Device, Elevator Rescue Kit and Method
OTIS ELEVATOR COMPANY
0 cites
US117023212023
Traction Machine Assembly and Elevator
OTIS ELEVATOR COMPANY
0 cites
US116674952023
Brake Disc Releasing Device, Turning Device, Elevator Rescue Kit and Method
OTIS ELEVATOR COMPANY
0 cites