Granted Patent
Utility
US 4,857,109 · App. 07/048,339
Rapidly solidified high strength, corrosion resistant magnesium base metal alloys
Inventors:
Santosh K. Das, Chin-Fong Chang
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: May 11, 1987
Inventors
Santosh K. Das
Chin-Fong Chang
Assignee (at issue)
AlliedSignal, Inc.
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.