Granted Patent
Utility
US 5,899,643 · App. 08/765,954
Slot opening key for a cutting tool
Inventor:
Hermann Oehler
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Feb 24, 1997
Inventor
Hermann Oehler
Assignee (at issue)
Iscar, Ltd.
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.