Patents for Nathaniel S. Keith


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Patents for Nathaniel S. Keith
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	228,763	Jun. 15, 1880	N.S. Keith	Dynamo-Electrical Machine
	255,795	Apr. 04, 1882	N.S. Keith	Electric Light Regulator
	257,588	May 09, 1882	N.S. Keith	Electric Light Regulator