Granted Patent
Utility
US 5,213,639 · App. 07/847,352
Damage tolerant aluminum alloy products useful for aircraft applications such as skin
Inventors:
Edward L. Colvin, Jocelyn I. Petit, Robert W. Westerlund, Paul E. Magnusen
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Mar 6, 1992
Inventors
Edward L. Colvin
Jocelyn I. Petit
Robert W. Westerlund
Paul E. Magnusen
Assignee (at issue)
Aluminum Company of America
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.