All Patents in class 73/510


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All Patents in class 73/510
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	173,069	Feb. 01, 1876	M.W. Shapley	Improvement in governors for steam-engines
	1,919,449	Jul. 25, 1933	G. Oetzel	Governor
	1,964,494	Jun. 26, 1934	A.K. Antonsen	Automatic Speed-Varying Mechanism