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Little Known Facts

  • Master Lock is founded by locksmith Harry Soref
  • Laminated padlock is patented in 1924
  • Production begins in one-room Milwaukee factory with five employees


  • Escape artist Harry Houdini fails to escape sheriff's handcuffs
  • Houdini seeks out Harry Soref's expertise
  • Soref shows Houdini tricks to hide keys under tongue and between fingers


  • Master Lock ships 147,600 padlocks to NYC Federal Agents
  • Speakeasies and distilleries are secured with Master Lock padlocks
  • Ironically, padlocks make Milwaukee, the nation's beer capital, famous


  • Master Lock exhibits at 1933 Chicago World's Fair
  • Public learns principals of laminated lock construction
  • Booth showcases original lion's head logo and oversize lock replica
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