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Patents for H. D. Williams
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
272,940Feb. 27, 1883B.F. BerghGear-wheelindustrial machine gearing
298,635May 13, 1884F. ThompsonDamper-regulator
331,246Nov. 24, 1885J.W. KenyonSteam-trap
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