French Patent 834,697 Addition 49,437 - Simplex

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French Patent # 834,697 Addition # 49,437 - Simplex

French Patent 834,697 Addition 49,437 - 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 May 1938
Derailleur brands: Simplex
Derailleurs: none

French Patent 834,697 Addition 49,437 scan 1 - Simplex thumbnail

French Patent 834,697 Addition 49,437 scan 2 - Simplex thumbnail

French Patent 834,697 Addition 49,437 scan 3 - Simplex thumbnail