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All Patents in class 470/10
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
479,175Jul. 19, 1892C.D. RogersWood Screw and Method of Making the Same
960,244Jun. 07, 1910W.G. AllenManufacture of Screws
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