Granted Patent
Utility
US 6,217,409 · App. 09/267,733
Threaded grinding wheel and method of dressing
Inventors:
Hermann J. Stadtfeld, Eric G. Mundt
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Mar 15, 1999
Inventors
Hermann J. Stadtfeld
Eric G. Mundt
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.