Granted Patent
Utility
US 4,691,206 · App. 06/720,405
Microstrip and cavity-backed aperture antenna
Inventors:
Hugh Shapter, Colin Leslie Hearl Wood
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Apr 5, 1985
Inventors
Hugh Shapter
Colin Leslie Hearl Wood
Assignee (at issue)
Plessey Overseas Limited
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.