Granted Patent
Utility
US 4,814,785 · App. 07/148,312
Wideband gridded square frequency selective surface
Inventor:
Te-Kao Wu
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Jan 25, 1988
Inventor
Te-Kao Wu
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.