Granted Patent
Utility
US 5,014,022 · App. 07/450,131
Switched-loop/180 degree phase bit with aperture shutter capabilities
Inventors:
Ronald I. Wolfson, Clifton Quan
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Dec 13, 1989
Inventors
Ronald I. Wolfson
Clifton Quan
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.