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Patents for Charles J. Humphrey
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
132,258Oct. 15, 1872J.C. DietrichRip-saw handlehandsaws
135,408Feb. 04, 1873W. ClemsonImprovement in Buck-Saw Framesframe saws
150,289Apr. 28, 1874W. ClemsonImprovement in apparatus for tempering sawsmaking sawblades
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