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Patents for Frank Hutchinson
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
152,302Jun. 23, 1874J.W. MixterImprovement in saw-gummerssaw gummers
172,469Jan. 18, 1876J.W. MixterImprovement in saw-gummerssaw gummers
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