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All Patents in class 123/210
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
442,963	Dec. 16, 1890	J.H. Eichler	Rotary Gas Engine	rotary engines
660,482	Oct. 23, 1900	F.G. Bates	Rotary Explosive-Engine	rotary engines

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