Granted Patent
Utility
US 5,043,683 · App. 07/369,616
Waveguide to microstripline polarization converter having a coupling patch
Inventor:
Kevin Howard
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Jun 21, 1989
Inventor
Kevin Howard
Assignee (at issue)
GEC-Marconi Ltd.
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.