U.S. Circuit Court for the District of Middle Pennsylvania May 26, 1903, No. 1 (Thomas v. Spencer)
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United States · · · 26-05-1903
ARCHBALD, District Judge.
The two patents in suit were issued to Septimus Thomas in 1888 and 1893, respectively, and are each for what is known as a “slate picker,” a device for mechanically separating and removing slate and other impurities from coal.
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