Granted Patent
Utility
US 4,952,895 · App. 07/407,520
Planar airstripline-stripline magic-tee
Inventor:
Clifton Quan
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Sep 15, 1989
Inventor
Clifton Quan
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.