All Patents in class 92/108


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All Patents in class 92/108
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	97,231	Nov. 23, 1869	J.B. Root	Steam Engine
	728,572	May 19, 1903	B.M. Hanson	Fluid Pressure Operated Chuck
	2,955,578	Oct. 11, 1960	A.H. Luedicke, Jr., C.L. Flessate	Hydraulic Ram