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Patents for E. R. Ruppert
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,166,322	Dec. 28, 1915	J.J. Brewer	Marking-Gage
	1,206,164	Nov. 28, 1916	J.M. Stryhal	Valve Grinding Tool
	1,409,833	Mar. 14, 1922	H.A. Cook	Railroad Inclinometer

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