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All Patents of Type: drill sharpening machines
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
614,092Nov. 15, 1898G.T. EamesDrill-grinderdrill sharpening machines
643,703Feb. 20, 1900H.P. WhiteDrill-grinding machinesdrill sharpening machines
643,927Feb. 20, 1900O.S. WalkerDrill-grinderdrill sharpening machines
684,890Oct. 22, 1901H.P. WhiteDrill-grinderdrill sharpening machines
704,348Jul. 08, 1902J.N. LapointeGrinding-machinedrill sharpening machines
2,147,227Feb. 14, 1939G.B. AmblerDrill sharpening machinedrill sharpening machines
2,805,522Sep. 10, 1957T.S. DaytonApparatus for Sharpening Wood Bitsdrill sharpening machines
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