Granted Patent
Utility
US 6,022,175 · App. 08/921,996
Elongate rotary tool comprising a cermet having a Co-Ni-Fe binder
Inventors:
Hans-Wilm Heinrich, Manfred Wolf, Dieter Schmidt, Uwe Schleinkofer
Patented Case
View Patent ↗
Granted: Feb 8, 2000
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.