Granted Patent
Utility
US 5,521,362 · App. 08/257,251
Electronic purse card having multiple storage memories to prevent fraudulent usage and method therefor
Inventor:
Robert Powers
Patented Case
View Patent ↗
Granted: May 28, 1996
Filed: Jun 8, 1994
Inventor
Robert Powers
Assignee (at issue)
MCI Communications 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.