Granted Patent
Utility
US 4,910,774 · App. 07/216,644
Method and system for suthenticating electronic memory cards
Inventor:
Simon Barakat
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Jul 8, 1988
Inventor
Simon Barakat
Assignee (at issue)
Schlumberger Industires, S.A.
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.