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All Patents in class 409/74
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
230,825Aug. 03, 1880I.S. SchuylerMachine for Cutting Screw Threadsmetal threading machines
471,194Mar. 22, 1892C. RosineAutomatic Screw Cutting Machinescrew machines
1,613,577Jan. 04, 1927J.C. FletcherDie Cutting Machine
2,382,662Aug. 14, 1945A.J. PranceThread milling machinetapping machines
2,596,723May 13, 1952H.H. RanneyThread-cutting Mechanismmetalworking machine mechanisms
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