All Patents in class 33/281


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All Patents in class 33/281
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	AI289	Jul. 17, 1860	F. Yeiser	Measurement of solar altitude
	1,036,601	Aug. 27, 1912	D.W. Frank, Sr.	Conbined Level, Plumb and Grade Finder