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All Patents in class 470/81
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
7,262XOct. 25, 1832J.H. ShraderMachine for cutting endless screws
806,075Nov. 28, 1905T. FawcusSpiral Gear Cutting Machinegear making machines
945,901Jan. 11, 1910F.E. AnthonyScrew-cutting attachmentscrew machines
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