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Changshan ZHAO

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  • Kunming, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Compression charging device
    • Patent number 11,160,315
    • Issue date Nov 2, 2021
    • CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD
    • Ru Wang
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    Sliding cover-opening device
    • Patent number 10,463,073
    • Issue date Nov 5, 2019
    • CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD
    • Jianguo Tang
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES

Patents Applicationslast 30 patents

  • Information Patent Application

    SLIDING COVER-OPENING DEVICE
    • Publication number 20190335807
    • Publication date Nov 7, 2019
    • CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD
    • Jianguo TANG
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Application

    COMPRESSION CHARGING DEVICE
    • Publication number 20190267823
    • Publication date Aug 29, 2019
    • CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD
    • Xudong ZHENG
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES