Granted Patent
Utility
US 4,866,455 · App. 07/122,073
Antenna system for magnetic and resonant circuit detection
Inventor:
George J. Lichtblau
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Nov 18, 1987
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.