Granted Patent
Utility
US 5,557,085 · App. 08/256,487
Method and device for electronic identification
Inventors:
Carl Tyren, Leif Persson
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Sep 6, 1994
Inventors
Carl Tyren
Leif Persson
Assignee (at issue)
RSO Corporation N.V.
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.