This patent dates from well after the golden age of ICS products, and is probably an irrelevant footnote in the history of the derailleur. It does however, indicate that Artemio Granzotto was still actively developing bicycle components in 1991.

• Publisher: Eidgenössisches Institut für Geistiges Eigentum/Institut Fédéral de la Propriété Intellectuelle
• Inventor: Artemio Granzotto
• Country: Switzerland
• Date: Priority date November 1991
• Derailleur brands: ICS
• Derailleurs: unknown