Granted Patent
Utility
US 4,230,489 · App. 06/029,841
Alloys of Fe, Cr, Si, Y and Al
Inventor:
John E. Antill
Patented Case
View Patent ↗
Granted: Oct 28, 1980
Filed: Apr 13, 1979
Inventor
John E. Antill
Assignee (at issue)
United Kingdom Atomic Energy Authority
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.