French Patent 991,691 - Simplex

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French Patent # 991,691 - Simplex

French Patent 991,691 - Simplex main image

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Publisher: L’Institut national de la propriété industrielle
Inventor: Lucien-Charles-Hippolyte Juy
Country: France
Date: French application April 1944
Derailleur brands: Simplex
Derailleurs: unknown

French Patent 991,691 scan 1 - Simplex thumbnail

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