Granted Patent
Utility
US 5,207,787 · App. 06/356,914
Variable area nozzle
Inventor:
William J. Lewis
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Feb 23, 1982
Inventor
William J. Lewis
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.