Granted Patent
Utility
US 4,292,639 · App. 06/103,930
Quasi-doppler direction finding equipment
Inventor:
Joseph E. Bambara
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Dec 17, 1979
Inventor
Joseph E. Bambara
Assignee (at issue)
Servo Corporation of America
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.