French Patent # 873,992 - Siroco

DISRAELI DOCUMENTS

French Patent # 873,992 - Siroco

French Patent 873,992 - Siroco main image

Publisher: L’Institut national de la propriété industrielle
Inventor: Antoinette Vialette née Chevillard
Country: France
Date: Priority date October 1940
Derailleur brands: Siroco
Derailleurs: Siroco (1st style)

French Patent 873,992 - Siroco scan 01 thumbnail

French Patent 873,992 - Siroco scan 02 thumbnail

French Patent 873,992 - Siroco scan 03 thumbnail

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Siroco (1st style) derailleur thumbnail

Siroco (1st style) 1940?