All Patents in class 12/21


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All Patents in class 12/21
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	7,255X	Oct. 25, 1832	S. Knowlton	Machine for hardening taps for soles of boots and shoes
	121,389	Nov. 28, 1871	N. Linsley	Improvement in Machines for Rolling Leather
	1,994,510	Mar. 19, 1935	A.F. Froussard	Shoe Sole Machine