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All Patents in class 451/253
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
RE9,468Nov. 16, 1880W. GleasonMachine for Cutting the Teeth of Metal Gearsgear making machines
2,119,298May 31, 1938A.W. SimowskiGear Finishing Toolgear cutting tools
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