All Patents in class 209/191


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All Patents in class 209/191
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	25,933	Oct. 25, 1859	W.H. Howland	Amalgamator
	244,240	Jul. 12, 1881	W.H. Howland	Ore-amalgamator
	251,442	Dec. 27, 1881	F.A. Huntington	Grinding and amalgamating pan