Granted Patent
Utility
US 5,957,412 · App. 08/936,549
Method and device for vertical guidance of an aircraft
Inventors:
Yves Saint Upery, Eric Peyrucain
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Sep 24, 1997
Inventors
Yves Saint Upery
Eric Peyrucain
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.