Granted Patent
Utility
US 4,825,219 · App. 07/006,533
Slot antenna in circular waveguide
Inventor:
James S. Ajioka
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Jan 23, 1987
Inventor
James S. Ajioka
Assignee (at issue)
Hughes Aircraft 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.