Granted Patent
Utility
US 4,795,893 · App. 07/071,882
Security device prohibiting the function of an electronic data processing unit after a first cutoff of its electrical power
Inventor:
Michel Ugon
Patented Case
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Granted: Jan 3, 1989
Filed: Jul 10, 1987
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.