Man, that’s a family business.

• Publisher: US Patent and Trademark Office
• Inventor: Bruce W. Browning, assigned to: David L. Browning, Marc S. Browning, Christopher M. Browning, John B. Browning, Gloria S. Browning, Michael C. Browning and Paul C. Browning
• Country: USA
• Date: application filed August 1976
• Derailleur brands: Browning
• Derailleurs: Browning SmartShift 400