Granted Patent
Utility
US 6,240,515 · App. 09/097,834
Method of authenticating a magnetic card
Inventors:
Steven A. Carnegie, John P. Gardner, Kenneth J. Peters
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Jun 16, 1998
Inventors
Steven A. Carnegie
John P. Gardner
Kenneth J. Peters
Assignee (at issue)
NCR 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.