All Patents of Type: refining ores


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All Patents of Type: refining ores
Patents 1 - 1 of 1
Number	Date	Patentee	Title	Type
5,438X	Apr. 07, 1829	E.V. Freeman, H.B. Chew	Composition to Be Used in the Fusion, Refining, or Working of Metals or Ores	refining ores