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GRACE SCIENTIFIC R&D AND CONSULTANT LIMITED

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  • Shatin, N.T., HK
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Patents Applicationslast 30 patents

  • Information Patent Application

    BICYCLE DRIVEN BY HANDS
    • Publication number 20140353939
    • Publication date Dec 4, 2014
    • GRACE SCIENTIFIC R&D AND CONSULTANT LIMITED
    • Yau Cheung Kwok
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS