Granted Patent
Utility
US 4,833,478 · App. 06/560,218
Automatic direction finder antenna array
Inventor:
Edward J. Nossen
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Dec 12, 1983
Inventor
Edward J. Nossen
Assignee (at issue)
General Electric Company
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.