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Patents for S. S. Cushman
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	CA-8,362	Jan. 26, 1878	W.S. Mayo	Improvements on tonguing and grooving machines
	208,323	Sep. 24, 1878	W.S. Mayo	Improvement in tonguing and grooving machine
	CA-16,180	Jan. 23, 1883	W.S. Mayo	Improvements on tonguing and grooving machines

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