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Patents Granted on 1872-10-01
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
131,733Oct. 01, 1872A.H. BrainardImprovement in Milling Machinesmilling machines
131,828Oct. 01, 1872A. PitcherImprovement in Rotary-Wrenchesratchet wrenches
131,829Oct. 01, 1872H.L. PrattBit-stockbrace chucks
131,835Oct. 01, 1872H.A. Tripp, W. TrippImprovement in Hoop-Lock Cuttershoop making machines
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