Granted Patent
Utility
US 5,349,365 · App. 07/779,895
Quadrifilar helix antenna
Inventors:
Steven G. Ow, Peter J. Connolly
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Oct 21, 1991
Inventors
Steven G. Ow
Peter J. Connolly
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.