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Patents for John Hamm
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
202,309Apr. 09, 1878J. WagnerImprovement in saw-sharpening machinessaw sharpening machines
305,920Sep. 30, 1884J. HammMarker for Weather-Boards, Flooring, and Jambsclapboard markers
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