Granted Patent
Utility
US 5,207,843 · App. 07/738,805
Chromium hot work steel
Inventors:
James L. Maloney, III, William P. Edwards, Mark S. Rodney
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jul 31, 1991
Inventors
James L. Maloney, III
William P. Edwards
Mark S. Rodney
Assignee (at issue)
Latrobe Steel Company
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.