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Patents for Fred. A. Rugg
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
RE4,569Sep. 26, 1871J. SwanImprovement in Machinery for Forming the Lips of Augersmaking drills and augers
RE5,624Oct. 21, 1873J. SwanMachine for Upsetting Cook's Auger Bitsmaking drills and augers
208,862Oct. 08, 1878J. SwanImprovement in the Manufacture of Auger-Bitsmaking drills and augers
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