Qi YUAN

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Activation apparatus of railway vehicle and railway vehicle having...
- Patent number 11,247,704
- Issue date Feb 15, 2022
- CRRC QINGDAO SIFANG CO., LTD.
- Huiqing Zhang
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Activation Apparatus of Railway Vehicle and Railway Vehicle Having...
- Publication number 20210221408
- Publication date Jul 22, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Huiqing ZHANG
- B61 - RAILWAYS
Information Patent Application
Chassis Component of Railway Vehicle, and Railway Vehicle
- Publication number 20190144011
- Publication date May 16, 2019
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaojie WANG
- B61 - RAILWAYS