French Patent 796,583 - Spirax scan 3

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French Patent # 796,583
scan 3 of 3

Publisher: L’Institut national de la propriété industrielle
Document: French Patent # 796,583 - Spirax
Date: French application October 1935
Derailleur brands: Spirax
Derailleurs: unknown

French Patent 796,583 - Spirax scan 3 main image

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