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All Patents in class 122/486
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	655,018	Jul. 31, 1900	R. Scheidler	Steam Boiler
	742,938	Nov. 03, 1903	D.M. Webster	Steam Boiler
	2,116,498	May 10, 1938	E.A. Hall	Grinding Machine

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