Granted Patent
Utility
US 5,679,908 · App. 08/554,376
Corrosion resistant, high vanadium, powder metallurgy tool steel articles with improved metal to metal wear resistance and a method for producing the same
Inventors:
Kenneth E. Pinnow, William Stasko, John Hauser
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Nov 8, 1995
Inventors
Kenneth E. Pinnow
William Stasko
John Hauser
Assignee (at issue)
Crucible Materials Corporation
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.