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All Patents in class 418/187
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	24,388	Jun. 14, 1859	D.D. Hardy	Rotary Steam Engine
	453,043	May 26, 1891	G. Flitz, J. Flitz, E. Flitz	Rotary Motor
	1,199,229	Sep. 26, 1916	B.F. Augustine	Rotary Explosion Engine

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