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Patents for John C. Humphreys
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
370,542	Sep. 27, 1887	J.C. Humphreys	Cutter-head	cutterheads
471,337	Mar. 22, 1892	J.C. Humphreys	Churn	churns

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