Granted Patent
Utility
US 4,311,431 · App. 05/958,545
Turbine engine with shroud cooling means
Inventor:
Dennis E. Barbeau
Patented Case
View Patent ↗
Granted: Jan 19, 1982
Filed: Nov 8, 1978
Inventor
Dennis E. Barbeau
Assignee (at issue)
Teledyne Industries, 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.