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Patents for Herbert J. Leighton
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	325,096	Aug. 25, 1885	J. Coffin, H.J. Leighton	Graduated Scale
	490,121	Jan. 17, 1893	H.J. Leighton	Protractor Bevel
	1,840,237	Jan. 05, 1932	H.J. Leighton	Work Holder for Straightening Machines

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