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All Patents in class 173/132
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  1,282,928Oct. 29, 1918R.S. PeirceDrill
  1,853,128Apr. 12, 1932K.A. Johanson, E.G. HysingTool Holder Adapted for Motor Driven Striking Tools
  2,561,577Jul. 24, 1951R.G. KnudsenPneumatic Impact Pullers and the Like
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