- Alfa - adverts etc.
- Alfa - patents & trademarks
- see also Spanish Patent # 153,083 - Alfa 1941
- see also Spanish Patent # 153,083 - Alfa 1941
- see also Spanish Patent # 157,898 - Alfa 1942
- see also Spanish Patent # 157,898 - Alfa 1942
- 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
- see also US Trademark # 988,778 - Alfa 1947
- see also US Trademark # 988,778 - Alfa 1947
- see also Spanish Patent # 184,448 - Alfa 1948
- see also Spanish Patent # 184,448 - Alfa 1948
- see also Spanish Patent # 205,484 - Zeus 1952
- see also Spanish Patent # 205,484 - Zeus 1952
- see also Spanish Trademark # 286,587 - Zeus 1954
- see also Spanish Trademark # 286,587 ... 1954
- see also US Trademark # 984,854 - Zeus 1954
- see also US Trademark # 984,854 - Zeus 1954
- see also Spanish Utility Model # 114,146 - Alfa 1965
- see also Spanish Utility Model # 114,... 1965
- see also Spanish Utility Model # 124,457 - Alfa 1966
- see also Spanish Utility Model # 124,... 1966
- see also Spanish Trademark # 520,718 - Zeus 1966
- see also Spanish Trademark # 520,718 ... 1966
- see also US Trademark # 2,583,328 - Zeus 1966
- see also US Trademark # 2,583,328 - Zeus 1966
- Alfa - other references