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Patents for George H. Southwick
Patents 1 - 3 of 3
First set of recordsLast set of records
108,310Oct. 11, 1870J. WheelockImprovement in boring apparatusboring bars
129,876Jul. 23, 1872J. WheelockImprovement in Milling Machinesmilling machines
144,583Nov. 11, 1873J. WheelockImprovement in tool-holders and cutter-heads for boring-barsboring bars
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