French Patent # 1,021,893 - Cervino

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French Patent # 1,021,893 - Cervino

French Patent 1,021,893 - Vittoria main image

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Publisher: L'Institut national de la propriété industrielle
Inventor: Tommaso Nieddu, Bruno Mariani, Robert Blaser and Ferdinand Blaser
Country: France
Date: Priority date December 1949
Derailleur brands: Cervino, patent sold to Altenburger
Derailleurs: unknown

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