see also French Patent # 727,193 - Vittoria 1930
see also French Patent # 727,193 - Vittoria 1930
- Publisher: L'Institut national de la propriété industrielle
- Date: Priority date November 1930
- Derailleur brands: Vittoria
- Derailleurs: Vittoria Margherita (1st style)
see also French Patent # 783,214 - Vittoria 1934
see also French Patent # 783,214 - Vittoria 1934
- Publisher: L'Institut national de la propriété industrielle
- Date: Priority date August 1934
- Derailleur brands: Vittoria
- Derailleurs: Vittoria Margherita (2nd style)
see also Swiss Patent # 247,588 - Vittoria 1942
see also Swiss Patent # 247,588 - Vittoria 1942
- Publisher: Eidgenössisches Institut für Geistiges Eigentum/Institut Fédéral de la Propriété Intellectuelle
- Date: Priority date July 1942
- Derailleur brands: Vittoria
- Derailleurs: unknown
see also French Patent # 936,225 - Cervino 1946
see also French Patent # 936,225 - Cervino 1946
- Publisher: L'Institut national de la propriété industrielle
- Date: Priority date November 1946
- Derailleur brands: Cervino
- Derailleurs: Cervino
see also French Patent # 1,021,893 - Cervino 1949
see also French Patent # 1,021,893 - Cervino 1949
- Publisher: L'Institut national de la propriété industrielle
- Date: Priority date December 1949
- Derailleur brands: Cervino, patent sold to Altenburger
- Derailleurs: unknown
see also German Patent # 858,934 - Altenburger 1951
see also German Patent # 858,934 - Altenburger 1951
- Publisher: Deutsches Patent- und Markenamt
- Date: Priority date June 1951
- Derailleur brands: Altenburger, development of a Cervino design
- Derailleurs: Altenburger S-O
