Patents for Otis R. Angell


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Patents for Otis R. Angell
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	977,258	Nov. 29, 1910	O.R. Angell	Combined valve grinder and drill
	1,395,787	Nov. 01, 1921	O.R. Angell	Edge Setting and Burnishing Machine