Granted Patent
Utility
US 4,742,709 · App. 07/058,369
Powerplant simulators for aircraft
Inventor:
Robert Angel
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Jun 5, 1987
Inventor
Robert Angel
Assignee (at issue)
British Aerospace 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.