Wenxiang Liu

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Elevator traction machine installation apparatus and elevator tract...
- Patent number 12,246,944
- Issue date Mar 11, 2025
- Otis Elevator Company
- Wenxiang Liu
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
CONSTRUCTION LIFTING DEVICE AND LEAPING METHODS FOR CONSTRUCTION LI...
- Publication number 20250083928
- Publication date Mar 13, 2025
- Otis Elevator Company
- Wenxiang Liu
- B66 - HOISTING LIFTING HAULING
Information Patent Application
ELEVATOR TRACTION MACHINE INSTALLATION APPARATUS AND ELEVATOR TRACT...
- Publication number 20240262656
- Publication date Aug 8, 2024
- Otis Elevator Company
- Wenxiang Liu
- B66 - HOISTING LIFTING HAULING