US Patent 4,226,131 - SunTour

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US Patent # 4,226,131 - SunTour

US Patent 4,226,131 - SunTour Tech system main image

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Publisher: US Patent and Trademark Office
Inventor: Kazuto Yamasaki, assigned to SunTour
Country: USA
Date: US application filed October 1978, Japanese applications filed: October 1977
Derailleur brands: SunTour
Derailleurs: SunTour Tech 3 pivot system

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