This logo appears (to my inexpert eye) to be backwards, and should be viewed in a mirror for the correct view. It appeared extensively (the correct way around) on derailleurs of the Campagnolo C-Record and Campagnolo Victory generation. I also suspect that it is the inspiration for the strange logo on the ZIF derailleur in this collection.

• Publisher: US Patent and Trademark Office
• Inventor: Campagnolo S.P.A.
• Country: USA
• Date: First use 1969
• Derailleur brands: Campagnolo
• Derailleurs: nothing specific