Granted Patent
Utility
US 4,797,643 · App. 07/111,825
Coaxial hybrid coupler and crossing element
Inventors:
Mon N. Wong, Samuel Wong
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Oct 23, 1987
Inventors
Mon N. Wong
Samuel 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.