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All Patents in class 409/48
Patents 1 - 9 of 9
First set of recordsLast set of records
490,503Jan. 24, 1893G.S. RomingerWorm Gear Cutting Machinegear making machines
806,075Nov. 28, 1905T. FawcusSpiral Gear Cutting Machinegear making machines
921,593May 11, 1909A.T. CollierApparatus for Cutting Globoig Wormsgear making machines
1,092,571Apr. 07, 1914C.J. HalborgMachine for Backing Off Hobs or Cutters for Cutting Gearsbacking off lathes
1,190,391Jul. 11, 1916E.R. FellowsMeans for Generating and Cutting Irregular Gearsgear making machines
1,221,303Apr. 03, 1917W.F. FolmerGear Cutting Machinegear making machines
1,798,059Mar. 24, 1931H. Bilgram, M.F. HillMachine for making rotorsgear making machines
2,348,845May 16, 1944H. PelphreyMachine for Forming Gearsgear making machines
2,859,665Nov. 11, 1958B.H. Johnson, F.E. BirchApparatus for Relieving Portions of the Thread Flanks of Double Enveloping Worm Elementsgear making machines
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