Granted Patent
Utility
US 6,818,040 · App. 09/979,025
Powder metallurgy manufactured high speed steel
Inventors:
Odd Sandberg, Leif Westin
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Nov 15, 2001
Inventors
Odd Sandberg
Leif Westin
Assignees (at issue)
Uddeholm Tooling Aktiebolag
ERASTEEL KLOSTER AKTIEBOLAG
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.