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All Patents in class 137/625.63
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  1,884,060Oct. 25, 1932H.F. MacMillinHydraulic Press
  2,618,244Nov. 18, 1952E.G. RoehmPilot Valve Controlled Tracer Valve
  2,969,808Jan. 31, 1961H. HorlacherTwo-Stage Valve
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