Granted Patent
Utility
US 6,170,917 · App. 08/918,990
Pick-style tool with a cermet insert having a Co-Ni-Fe-binder
Inventors:
Hans-Wilm Heinrich, Manfred Wolf, Dieter Schmidt, Uwe Schleinkofer
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Aug 27, 1997
Inventors
Hans-Wilm Heinrich
Manfred Wolf
Dieter Schmidt
Uwe Schleinkofer
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.