Patents for Andrew R. Arnold


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Patents for Andrew R. Arnold
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	5,913X	Apr. 13, 1830	A.R. Arnold, E. Harris	Revolving burr temples
	44,037	Aug. 30, 1864	A.R. Arnold	Improved machine for making twist-drills
	RE3,588	Aug. 10, 1869	A.R. Arnold	Improved machine for making twist-drills