Granted Patent
Utility
US 6,094,178 · App. 08/969,861
Dual mode quadrifilar helix antenna and associated methods of operation
Inventor:
Gary G. Sanford
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Nov 14, 1997
Inventor
Gary G. Sanford
Assignee (at issue)
ERICSSON GMBH
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.