Granted Patent
Utility
US 6,217,992 · App. 09/316,616
Coated cutting insert with a C porosity substrate having non-stratified surface binder enrichment
Inventor:
George P. Grab
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: May 21, 1999
Inventor
George P. Grab
Assignee (at issue)
Kennametal PC 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.