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Patents for A. Ebert O'Brien
Patents 1 - 4 of 4
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
1,004,792Oct. 03, 1911W.L. BessoloPipe Wrench
1,008,939Nov. 14, 1911W.L. BessoloPipe Wrench
  1,259,045Mar. 12, 1918A.L. Proske, T.H. ProskeDrill Sharpener
  1,267,862May 28, 1918H. HaefligerCombined Microscope and Object Holder
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