Granted Patent
Utility
US 4,489,585 · App. 06/447,189
Production of tubular members
Inventors:
Nicholas Palmer, Anthony R. H. Pocock
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Dec 6, 1982
Inventors
Nicholas Palmer
Anthony R. H. Pocock
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.