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Shifang Xu

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  • Ningbo, CN
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  • Information Patent Grant

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    • Patent number 11,174,974
    • Issue date Nov 16, 2021
    • NINGBO SINPPA TECHNOLOGY CO., LTD.
    • Changguo Jiang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents