Improvement In Shaft-Furnaces For Smelting Tailing And Condensing Mercury Patent Print
This Patent for a Improvement In Shaft-furnaces For Smelting Tailing And Condensing Mercury was invented by George R. Evans; William P. Prescott and filed on May 16, 1877. It was issued on December 18, 1877 by the United States Patent and Trademark Office.
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