Granted Patent
Utility
US 5,228,814 · App. 07/797,745
Gear hobbing machine
Inventor:
Paul W. Suwijn
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Nov 25, 1991
Inventor
Paul W. Suwijn
Assignee (at issue)
THE GLEASON WORKS
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.