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All Patents in class D18/57
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
D155,539	Oct. 11, 1949	M.H. Preis, J.A. Hoffman	Design for an engraving machine	metal engraving machines
2,688,275	Sep. 07, 1954	L.C. Hammond, D.E. Sutton	Printing plate shaving machine

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