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All Patents in class 29/726
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
450,154Apr. 14, 1891J.J. HoganImprovements in Wrenches For Internal Nipples
  875,746Jan. 07, 1908F.H. StolpMachine for making Radiators
942,410Dec. 07, 1909H.L. PetersonPressing device for push-nipple radiators
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