Granted Patent
Utility
US 5,047,738 · App. 07/594,499
Ridged waveguide hybrid
Inventors:
Harry Wong, Mon N. Wong
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Oct 9, 1990
Inventors
Harry Wong
Mon N. Wong
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.