Another strange an meaningless 1950s Campagnolo trademark, and a particularly ugly one to boot. For some reason I associate this logo with the Campagnolo 980 front mech - which was moderately ugly and dysfunctional in its own right.

• Publisher: US Patent and Trademark Office
• Inventor: Tullio Campagnolo
• Country: USA
• Date: First use January 1959
• Derailleur brands: Campagnolo
• Derailleurs: nothing specific