Granted Patent
Utility
US 5,209,513 · App. 07/803,567
Method for preventing counterfeiting of sales receipts
Inventors:
Orlando C. Batelli, Michael A. Repp
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Dec 9, 1991
Inventors
Orlando C. Batelli
Michael A. Repp
Assignee (at issue)
Wallace Computer Services, 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.