This patent covers the Campagnolo Velox, a heavy, ugly, poorly performing and surprisingly expensive object. The reason for its existence remains shrouded in mystery.

• Publisher: UK Intellectual Property Office
• Inventor: Tullio Campagnolo
• Country: UK
• Date: Italian application April 1971, UK application April 1972
• Derailleur brands: Campagnolo
• Derailleurs: Campagnolo Velox (2250)