Granted Patent
Utility
US 5,471,224 · App. 08/151,501
Frequency selective surface with repeating pattern of concentric closed conductor paths, and antenna having the surface
Inventor:
Sina Barkeshli
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Nov 12, 1993
Inventor
Sina Barkeshli
Assignee (at issue)
Space Systems/Loral, LLC
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.