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Weichun Ren

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  • Heilongjiang, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Journal box rubber pad and bogie
    • Patent number 8,561,548
    • Issue date Oct 22, 2013
    • Qiqihar Railway Rolling Stock Co., Ltd.
    • Zhenming Liu
    • B61 - RAILWAYS

Patents Applicationslast 30 patents

  • Information Patent Application

    JOURNAL BOX RUBBER PAD AND BOGIE
    • Publication number 20130008338
    • Publication date Jan 10, 2013
    • QIQIHAR RAILWAY ROLLING STOCK CO., LTD
    • ZHENMING LIU
    • B61 - RAILWAYS