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All Patents in class D18/57
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
D155,539Oct. 11, 1949M.H. Preis, J.A. HoffmanDesign for an engraving machinemetal engraving machines
2,688,275Sep. 07, 1954L.C. Hammond, D.E. SuttonPrinting plate shaving machine
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