All Patents in class 72/331


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All Patents in class 72/331
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
10,720	Apr. 04, 1854	S. Andrews	Drop and die forging and punching machine	drop hammers
337,504	Mar. 09, 1886	J. Kritch	Die for Forging Axles	forging machines
622,269	Apr. 04, 1899	E. Rogers	Axe/Hatchet Making	making axes