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All Patents in class 409/21
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,091,493Mar. 31, 1914F.O. FarwellGear Hobbing Machinegear making machines
1,252,482Jan. 08, 1918S.S. Cook, A.Q. Carnegie, C.A. ParsonsGear Cutting Machinegear making machines
1,274,583Aug. 06, 1918S.S. Cook, A.Q. Carnegie, C.A. ParsonsGear Cutting Machinegear making machines
1,274,584Aug. 06, 1918S.S. Cook, A.Q. Carnegie, C.A. ParsonsGear Cutting Machinegear making machines
1,274,585Aug. 06, 1918S.S. Cook, A.Q. Carnegie, C.A. ParsonsGear Cutting Machinegear making machines
2,073,917Mar. 16, 1937W.F. ZimmermannCutter Positioning Device for Hobbing Machinesgear hobbing machines
2,113,124Apr. 05, 1938W.F. ZimmermannDeflection Compensator
2,117,930May 17, 1938W.F. ZimmermannOutboard Swivel Supportgear hobbing machines
2,211,309Aug. 13, 1940W.F. ZimmermannPower Operated Swivel Carriage for Hobbing Machinesgear hobbing machines
2,330,167Sep. 21, 1943W.F. ZimmermannThermally Insulated Hobbing Machinegear hobbing machines
2,330,168Sep. 21, 1943W.F. ZimmermannHobbing Machinegear hobbing machines
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