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Home arrow Pennsylvania arrow Philadelphia County arrow Samuel Hopkins PA1630
Samuel Hopkins PA1630 Print E-mail
The holder of the first U.S. patent, signed by George Washington, lived here. On July 31, 1790, Hopkins received a patent for an improvement in making potash, a major industrial chemical. In succeeding centuries, the U.S. Government issued millions of patents.
2nd & Arch Streets, Philadelphia. Philadelphia County Pennsylvania.
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