All Patents in class 72/411


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All Patents in class 72/411
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	135,406	Feb. 04, 1873	L. Chapman	Improvement in Dies for Making Wrench-Heads
	659,626	Oct. 09, 1900	H.C. Pomeroy	Riveting-Machine