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All Patents in class 279/46.3
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
8,315Aug. 26, 1851P.H. NilesAdjustable Tool-Hafttool handles
184,210Nov. 07, 1876W.S. HowImprovement in Tool-Holderstool holders
1,116,532Nov. 10, 1914R.A. ArmstrongScrewdriver Attachmentscrewdrivers
1,582,445Apr. 27, 1926W.R. BorderTwo-jaw mini-chuck that fits where a square/taper shank bit would ordinarily go.
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