Granted Patent
Utility
US 4,972,199 · App. 07/331,422
Low cross-polarization radiator of circularly polarized radiation
Inventors:
Krishnan Raghavan, Dean N. Paul, Paramjit S. Bains
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Mar 30, 1989
Inventors
Krishnan Raghavan
Dean N. Paul
Paramjit S. Bains
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.