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All Patents in class 408/187
Patents 1 - 9 of 9
First set of recordsLast set of records
797Jun. 20, 1838J. LindlyMachine for cutting screws on the ends of bedstead-railsspecialty machines
50,328Oct. 10, 1865W.G. BonwillImprovement in Screw-Driversscrewdriver blades
50,677Oct. 31, 1865W.H. BennettImprovement in Cutters for Barrel Heads
101,466Apr. 05, 1870J.E. HunterImproved hand drilling-machinehuman powered machines
108,933Nov. 01, 1870Z.S. OgdenBrace for cutting screw threadsbraces
144,583Nov. 11, 1873J. WheelockImprovement in tool-holders and cutter-heads for boring-barsboring bars
146,056Dec. 30, 1873L. FeelyBit-stockbrace chucks
358,731Mar. 01, 1887H. ClarkCountersinkcountersinks
1,220,348Mar. 27, 1917A.B. LandisCutter-headmetal threading machines
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