Granted Patent
Utility
US 4,882,555 · App. 07/231,326
Plural plane waveguide coupler
Inventor:
Mon N. Wong
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Aug 12, 1988
Inventor
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.