Granted Patent
Utility
US 4,657,482 · App. 06/308,188
Air cooling systems for gas turbine engines
Inventor:
Peter F. Neal
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Sep 18, 1981
Inventor
Peter F. Neal
Assignee (at issue)
ROLLS-ROYCE plc
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.