ZhengZong Tang

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Tianjin, CN

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Patents Grantslast 30 patents

Information Patent Grant
Stabilizing device of elevator car and a control method thereof, an...
- Patent number 11,142,431
- Issue date Oct 12, 2021
- Otis Elevator Company
- Qing Li
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR BRAKING DEVICE AND ELEVATOR SYSTEM
- Publication number 20240067498
- Publication date Feb 29, 2024
- Otis Elevator Company
- Zhengzong Tang
- B66 - HOISTING LIFTING HAULING
Information Patent Application
STABILIZING DEVICE OF ELEVATOR CAR AND A CONTROL METHOD THEREOF, AN...
- Publication number 20180194595
- Publication date Jul 12, 2018
- Otis Elevator Company
- Qing Li
- B66 - HOISTING LIFTING HAULING