Yufeng CAO

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Qiqihar, CN

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Patents Grantslast 30 patents

Information Patent Grant
Bogie and axle box suspension positioning device thereof
- Patent number 10,086,851
- Issue date Oct 2, 2018
- CRRC Qiqihar Rolling Stock Co., Ltd.
- Shifeng Xu
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
BOGIE AND AXLE BOX SUSPENSION POSITIONING DEVICE THEREOF
- Publication number 20150367867
- Publication date Dec 24, 2015
- Qiqihar Railway Rolling Stock Co., Ltd. Dalian R&D Centre
- Shifeng XU
- B61 - RAILWAYS