see also Spanish Patent # 153,083 - Alfa 1941
see also Spanish Patent # 153,083 - Alfa 1941
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed June 1941
- Derailleur brands: Alfa possibly intended to be also marketed as Simplex
- Derailleurs: Alfa Cambio de Marchas
see also Spanish Patent # 157,898 - Alfa 1942
see also Spanish Patent # 157,898 - Alfa 1942
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed June 1942
- Derailleur brands: Alfa possibly intended to be marketed as Simplex
- Derailleurs: Alfa similar to Le Simplex (N. Arregui Spain)
see also Spanish Patent # 160,795 - Alfa 1943
see also Spanish Patent # 160,795 - Alfa 1943
see also Spanish Patent # 178,613 - Alfa 1947
see also Spanish Patent # 178,613 - Alfa 1947
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed June 1947
- Derailleur brands: Alfa possibly intended to be marketed as Simplex
- Derailleurs: unknown
see also US Trademark # 988,778 - Alfa 1947
see also US Trademark # 988,778 - Alfa 1947
- Publisher: US Patent and Trademark Office
- Date: First use October 1947
- Derailleur brands: Alfa
- Derailleurs: nothing specific
see also Spanish Patent # 184,448 - Alfa 1948
see also Spanish Patent # 184,448 - Alfa 1948
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed June 1948
- Derailleur brands: Alfa possibly intended to be marketed as Simplex
- Derailleurs: unknown
see also Spanish Patent # 205,484 - Zeus 1952
see also Spanish Patent # 205,484 - Zeus 1952
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed September 1952
- Derailleur brands: Zeus
- Derailleurs: Zeus Gran Sport
see also Spanish Trademark # 286,587 - Zeus 1954
see also Spanish Trademark # 286,587 - Zeus 1954
- Publisher: Oficina Española de Patentes y Marcas
- Date: application filed October 1954
- Derailleur brands: Zeus
- Derailleurs: nothing specific
see also US Trademark # 984,854 - Zeus 1954
see also US Trademark # 984,854 - Zeus 1954
- Publisher: US Patent and Trademark Office
- Date: First use October 1954
- Derailleur brands: Zeus
- Derailleurs: nothing specific
see also Spanish Utility Model # 114,146 - Alfa 1965
see also Spanish Utility Model # 114,146 - Alfa 1965
- Publisher: Oficina Española de Patentes y Marcas
- Date: Spanish application filed May 1965
- Derailleur brands: Alfa
- Derailleurs: Alfa 65?
see also Spanish Utility Model # 124,457 - Alfa 1966
see also Spanish Utility Model # 124,457 - Alfa 1966
- Publisher: Oficina Española de Patentes y Marcas
- Date: Priority date September 1966
- Derailleur brands: Alfa
- Derailleurs: Alfa Junior
see also Spanish Trademark # 520,718 - Zeus 1966
see also Spanish Trademark # 520,718 - Zeus 1966
- Publisher: Oficina Española de Patentes y Marcas
- Date: application filed December 1966
- Derailleur brands: Zeus
- Derailleurs: nothing specific
see also US Trademark # 2,583,328 - Zeus 1966
see also US Trademark # 2,583,328 - Zeus 1966
- Publisher: US Patent and Trademark Office
- Date: First use December 1966
- Derailleur brands: Zeus
- Derailleurs: nothing specific
