Granted Patent
Utility
US 4,983,036 · App. 07/286,214
Secure identification system
Inventor:
Ronald W. Froelich
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Dec 19, 1988
Inventor
Ronald W. Froelich
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.