A bicycle pedal ' lying ellipse'

• 1. 自行车椭圆轨迹踏板 [P] . 中国专利： CN207843213U . 2018-09-11
• 2. 自行车踏板心轴及自行车踏板心轴与曲柄组 [P] . 中国专利： CN114084268A . 2022-02-25
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  机译： 通过调节踏板阻力使自行车双腹踏板处于躺卧位置，并可以选择进行腹部锻炼

• 4. A bicycle pedal with ellipse [P] . 德国专利： DE29918657U1 . 2000-07-06

  机译： 椭圆形的自行车踏板

• 5. ELLIPSE TYPE CHAIN SPROCKET FOR BICYCLE PEDAL [P] . 韩国专利： KR200198827Y1 . 2000-10-02

  机译： 椭圆踏板链条自行车踏板

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