Granted Patent
Utility
US 4,377,848 · App. 06/197,735
Altitude capture mode for aircraft automatic flight control system
Inventors:
James Flannigan, Jack E. Emfinger, Thomas R. Elliott
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Oct 16, 1980
Inventors
James Flannigan
Jack E. Emfinger
Thomas R. Elliott
Assignee (at issue)
Sperry Corp.
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.