Granted Patent
Utility
US 5,782,999 · App. 08/685,967
Steel for enameling and method of making it
Inventor:
James Kostrubanic
Patented Case
View Patent ↗
Granted: Jul 21, 1998
Filed: Jul 22, 1996
Inventor
James Kostrubanic
Assignee (at issue)
USX 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.