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Patents for Mackintosh-Hemphill Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,439,341	Dec. 19, 1922	H.H. Talbot	Rolling-mill drive
	1,514,405	Nov. 04, 1924	H.H. Talbot	Variable-speed rolling-mill drive
	2,368,151	Jan. 30, 1945	W.M. McConnell	Lathe carriage drive

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