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All Patents in class 175/217
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  1,282,928Oct. 29, 1918R.S. PeirceDrill
  1,285,712Nov. 26, 1918H.R. HughesHorizontal Drilling Machine
1,803,307Apr. 28, 1931O.P. WodackPortable electric tool
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