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Patents for Jacob R. Hoffman
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
110,236Dec. 20, 1870J.R. HoffmanImprovement in saw-millsband sawmills
192,917Jul. 10, 1877J.R. HoffmanImprovement in band-saw millsband sawmills
417,425Dec. 17, 1889J.R. HoffmanBand-saw pulleybandsaw wheels
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