Xiaoxiao Dong

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Elevator synchronous door knife
- Patent number 10,427,914
- Issue date Oct 1, 2019
- Otis Elevator Company
- XiaoBo Zhang
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Asynchronous door knife of elevator integrated car door lock
- Patent number 10,040,669
- Issue date Aug 7, 2018
- Otis Elevator Company
- Xiaobo Zhang
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
ELEVATOR SYNCHRONOUS DOOR KNIFE
- Publication number 20180265332
- Publication date Sep 20, 2018
- Otis Elevator Company
- XiaoBo Zhang
- B66 - HOISTING LIFTING HAULING
Information Patent Application
ASYNCHRONOUS DOOR KNIFE OF ELEVATOR INTEGRATED CAR DOOR LOCK
- Publication number 20160236907
- Publication date Aug 18, 2016
- Otis Elevator Company
- Xiaobo Zhang
- B66 - HOISTING LIFTING HAULING