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Shanghai Saintsung Polytron Technologies Inc.

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  • Shanghai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combination lock
    • Patent number 9,464,463
    • Issue date Oct 11, 2016
    • Shanghai Saintsung Polytron Technologies Inc.
    • Chengfan Bao
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES