Thread: When were safety levers introduced?
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Old 04-25-21, 01:49 PM
  #16  
T-Mar
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Nubuo Ozaki, assignor to Yoshigai Kikai Kinzoku (Dia-Compe) filed the USA patent application for their brake safety level in October 1966 and it was granted in October 1968. The patent may have been filed slightly earlier in Japan.
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