Granted Patent
Utility
US 4,937,571 · App. 07/320,098
System for elaborating an alarm signal on board an aircraft in the event of a mini-tornado
Inventor:
Jean-Louis Bonafe
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Jan 6, 1989
Inventor
Jean-Louis Bonafe
Assignee (at issue)
Aerospatiale Societe Nationale Industrielle
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.