4. Machine element or mechanism
  5. Elements
  6. Cranks and pedals

Cheng-Xun Jiang

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Crank arm for bicycles

Machine element or mechanism – Elements – Cranks and pedals
Reexamination Certificate

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Head set assembly for bicycles

Machine element or mechanism – Control lever and linkage systems – Elements
Reexamination Certificate

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Method for making hollow bicycle cranks

Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2594557

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