Kai-hung Hu

4 Patents

• US118911552024

  Bicycle Front Derailleur

  AD-II ENGINEERING Inc.

  0 cites
• US118341312023

  Rear Derailleur

  AD-II ENGINEERING Inc.

  0 cites
• US118141322023

  Bicycle Operating Device

  AD-II ENGINEERING Inc.

  0 cites
• US118141382023

  Rear Derailleur

  AD-II ENGINEERING Inc.

  0 cites