Granted Patent
Utility
US 4,764,089 · App. 06/894,409
Abradable strain-tolerant ceramic coated turbine shroud
Inventor:
Thomas E. Strangman
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Aug 7, 1986
Inventor
Thomas E. Strangman
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.