Granted Patent
Utility
US 5,341,421 · App. 07/852,267
Security device, including a memory and/or a microcomputer for data processing machines
Inventor:
Michel Ugon
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Jun 8, 1992
Inventor
Michel Ugon
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.