Granted Patent
Utility
US 4,260,990 · App. 06/092,325
Asymmetrical antennas for use in electronic security systems
Inventor:
George J. Lichtblau
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Nov 8, 1979
Inventor
George J. Lichtblau
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.