Granted Patent
Utility
US 4,546,459 · App. 06/446,330
Method and apparatus for a phased array transducer
Inventor:
John C. Congdon
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Dec 2, 1982
Inventor
John C. Congdon
Assignee (at issue)
Magnavox Government and Industrial Electronics 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.