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Patents for John R. MacIntosh
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,801,504	Aug. 06, 1957	J.R. MacIntosh, S.A. Mercurio	Abrasive wheel structure
	2,874,519	Feb. 24, 1959	J.R. MacIntosh, S.A. Mercurio	Expansible abrasive wheel
	2,963,833	Dec. 13, 1960	J.R. MacIntosh, S.A. Mercurio	Expansible wheel and hub structure

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