Granted Patent
Utility
US 4,652,316 · App. 06/645,834
Production of grain oriented steel
Inventor:
Philip Beckley
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Aug 31, 1984
Inventor
Philip Beckley
Assignee (at issue)
British Steel 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.