see also Italian Patent # 941,031 - Guizzardi 1971
see also Italian Patent # 941,031 - Guizzardi 1971
- Publisher: Ufficio Italiano Brevetti e Marchi
- Date: Priority date November 1971
- Derailleur brands: Guizzardi
- Derailleurs: Guizzardi?
see also Italian Patent # 1,013,651 - Guizzardi 1974
see also Italian Patent # 1,013,651 - Guizzardi 1974
- Publisher: Ufficio Italiano Brevetti e Marchi
- Date: Priority date June 1974
- Derailleur brands: Guizzardi
- Derailleurs: none
