Granted Patent
Utility
US 4,543,579 · App. 06/550,120
Circular polarization antenna
Inventor:
Tasuku Teshirogi
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Nov 9, 1983
Inventor
Tasuku Teshirogi
Assignee (at issue)
Radio Research Laboratories, Ministry of Posts and Telecommunications
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.