Granted Patent
Utility
US 5,788,427 · App. 08/727,622
Indexable insert
Inventors:
Wolfgang Zitzlaff, Edgar Schutz
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Feb 21, 1997
Inventors
Wolfgang Zitzlaff
Edgar Schutz
Assignee (at issue)
KENNAMETAL INC.
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.