Granted Patent
Utility
US 4,853,658 · App. 07/211,705
Microwave phase shifters
Inventor:
Anthony Alan Lane
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Jun 27, 1988
Inventor
Anthony Alan Lane
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.