Granted Patent
Utility
US 5,737,421 · App. 08/620,162
System for controlling access to a function having clock synchronization
Inventor:
Yves Audebert
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Mar 22, 1996
Inventor
Yves Audebert
Assignee (at issue)
Activcard
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.