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Knee joint structure
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Patent number 11,278,415
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Issue date Mar 22, 2022
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Ken Dall Enterprise Co., Ltd.
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Chia-Pao Cheng
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Shock-absorbing twisting structure
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Patent number 11,229,535
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Issue date Jan 25, 2022
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Ken Dall Enterprise Co., Ltd.
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Chia-Pao Cheng
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Hydraulic ankle joint
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Patent number 10,028,844
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Issue date Jul 24, 2018
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Ken Dall Enterprise Co., Ltd.
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Chia-Pao Cheng
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Artificial ankle joint
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Patent number D798453
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Issue date Sep 26, 2017
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Ken Dall Enterprise Co., Ltd.
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Chia-Pao Cheng
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D24 - Medical and laboratory equipment
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