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All Patents in class 251/296
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
  2,199,158Apr. 30, 1940G.G. Hein, R.J. Statz, T.H. BuengerFluid pressure lifting jack
  2,355,916Aug. 15, 1944E. KlafstadRelief Valve
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