Granted Patent
Utility
US 4,907,270 · App. 07/171,427
Method for certifying the authenticity of a datum exchanged between two devices connected locally or remotely by a transmission line
Inventor:
Michel Hazard
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Mar 10, 1988
Inventor
Michel Hazard
Assignee (at issue)
Bull CP8
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.