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All Patents of Type: rail drilling machines
Patents 1 - 6 of 6
First set of recordsLast set of records
428,516May 20, 1890A.R. PaulusRailway Track Drillrail drilling machines
464,673Dec. 08, 1891H.P. BradfordDrill for electric railwaysrail drilling machines
541,980Jul. 02, 1895W.J. McGeheMetal Drillrail drilling machines
549,661Nov. 12, 1895A.A. SmithRatchet-drillrail drilling machines
634,502Oct. 10, 1899M.M. MooreDrillrail drilling machines
981,791Jan. 17, 1911C.H. OslundDrillrail drilling machines
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