137 W. Forest Hill Ave.
Oak Creek, WI, 53154 United States
Master Lock's founder figured that if battleships and bank vaults were made of laminated steel, why not locks? The world's largest padlock manufacturer invented and patented the laminated steel padlock in 1924. Today, it continues to manufacture and market padlocks, as well as steering wheel locks, cable locks and U-locks, window and door locks and alarms, and other products for the home and security applications in the automotive, consumer goods, commercial, education, and government markets. Master Lock is a wholly-owned subsidiary of Fortune Brands Storage & Security, itself a subsidiary of