Granted Patent
Utility
US 6,450,407 · App. 09/556,140
Chip card rebate system
Inventors:
Gary A. Freeman, David Freeman
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Apr 21, 2000
Inventors
Gary A. Freeman
David Freeman
Assignee (at issue)
Viztec, Inc.
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.