All Patents in class 470/140


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All Patents in class 470/140
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	88,981	Apr. 13, 1869	T.T. Prosser	Improvement in machines for heading bolts
	680,217	Aug. 13, 1901	J.R. Blakeslee	Rivet Making Machine