Granted Patent
Utility
US 4,924,052 · App. 07/319,041
"Processing grain-oriented ""electrical"" steel"
Inventors:
Philip Beckley, David Snell
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Mar 6, 1989
Inventors
Philip Beckley
David Snell
Assignee (at issue)
British Steel plc.
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.