Granted Patent
Utility
US 5,608,413 · App. 08/483,360
Frequency-selective antenna with different signal polarizations
Inventor:
Perry A. Macdonald
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Jun 7, 1995
Inventor
Perry A. Macdonald
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.