All Patents in class 418/182


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All Patents in class 418/182
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	79,781	Jul. 07, 1868	S.P. Ruggles	Improvement in Rotary Fluid-Elevators
	816,285	Mar. 27, 1906	I. Abbott	Rotary Engine
	878,543	Feb. 11, 1908	W. Krygowski	Steam Engine