see also French Patent # 491,536 - Chauveau 1918

see also French Patent # 491,536 - Chauveau 1918

• Publisher: L’Institut national de la propriété industrielle
• Date: French application January 1918
• Derailleur brands: unknown
• Derailleurs: unknown

see also French Registered Design # 28861-002 - unknown 1937

see also French Registered Design # 28861-002 - unknown 1937

• Publisher: L’Institut national de la propriété industrielle
• Date: French application August 1937
• Derailleur brands: unknown
• Derailleurs: unknown