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Patents for Nelson B. Keyes
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
438,848Oct. 21, 1890N.B. KeyesSheet-Metal Plierspliers
672,654Apr. 23, 1901N.B. Keyes, W.F. Hobbs, E.N. SperryPlierspliers
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