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Patents for William Powell Co.
Patents 1 - 7 of 7
First set of recordsLast set of records
159,962Feb. 16, 1875J. PowellLubricator for Steam Enginesoil cups
326,517Sep. 15, 1885J. PowellLubricatoroil cups
326,518Sep. 15, 1885J. PowellLubricatoroil cups
326,519Sep. 15, 1885J. PowellLubricatoroil cups
326,521Sep. 15, 1885J. PowellLubricatoroil cups
463,320Nov. 17, 1891J. PowellLubricatorsteam engine lubricators
604,265May 17, 1898J. PowellLubricatoroil pumps
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