All Patents in class 209/188


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All Patents in class 209/188
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
9,295X	Dec. 28, 1835	J. Curtis	Amalgam mills for separating gold from the ore	ore processing apparatus
48,030	May 30, 1865	H.H. Scoville, Jr.	Improved amalgamator	ore processing apparatus