All Patents in class 33/351


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All Patents in class 33/351
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	17,870	Jul. 28, 1857	C. Cole	Adjustment Applied to Pendulum Levels
	280,713	Jul. 03, 1883	E.A. Bostrom	Leveling Instrument
	933,912	Sep. 14, 1909	A.J. Matter	Protractor Level
	1,265,823	May 14, 1918	A.J. Skjonsbye	Level
	1,409,833	Mar. 14, 1922	H.A. Cook	Railroad Inclinometer