Granted Patent
Utility
US 4,430,117 · App. 06/437,503
Production of steel
Inventors:
Gene D. Spenceley, Mervyn W. Davies, Alan L. Robson
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Oct 28, 1982
Inventors
Gene D. Spenceley
Mervyn W. Davies
Alan L. Robson
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.