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Beijing CTKM Harmonic Drive Co., Ltd.

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  • Beijing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric power-assisted bicycle
    • Patent number 6,152,249
    • Issue date Nov 28, 2000
    • Beijing CTKM Harmonic Drive Co., Ltd.
    • Ke Mei Li
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS