All Patents in class 423/23


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All Patents in class 423/23
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
9,296X	Dec. 28, 1835	J. Curtis	Amalgam mills for separating gold from the ore	ore processing apparatus
9,297X	Dec. 28, 1835	J. Curtis	Amalgam mills for separating gold from the ore	ore processing apparatus