Granted Patent
Utility
US 5,770,844 · App. 08/736,888
Supervision of transactions with chip cards
Inventor:
Horst Henn
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Oct 25, 1996
Inventor
Horst Henn
Assignee (at issue)
International Business Machines Corporation
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.