Granted Patent
Utility
US 4,664,600 · App. 06/797,018
Rotor aerofoil blade containment
Inventor:
Derick A. Perry
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Nov 12, 1985
Inventor
Derick A. Perry
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.