Granted Patent
Utility
US 4,725,795 · App. 06/767,302
Corrugated ridge waveguide phase shifting structure
Inventors:
James S. Ajioka, Robert T. Clark, Dean C. Quick
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Aug 19, 1985
Inventors
James S. Ajioka
Robert T. Clark
Dean C. Quick
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.