Granted Patent
Utility
US 4,486,244 · App. 06/451,108
Method of producing superplastic aluminum sheet
Inventors:
Bennie R. Ward, Suphal P. Agrawal, Richard F. Ashton
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Dec 17, 1982
Inventors
Bennie R. Ward
Suphal P. Agrawal
Richard F. Ashton
Assignee (at issue)
Reynolds Metals Company
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.