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Patents for Franklin L. Hamlen
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
307,187Oct. 28, 1884Z.T. Furbish, F.L. HamlenRatchet Screw-Driverratcheting screwdrivers
315,137Apr. 07, 1885F.L. Hamlen, Z.T. FurbishRatchet Screw-Driverratcheting screwdrivers
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