Granted Patent
Utility
US 6,783,991 · App. 10/068,516
Reversible and reusable authentication system for secure documents
Inventors:
Rajendra Mehta, Steven L. Yeager
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Feb 6, 2002
Inventors
Rajendra Mehta
Steven L. Yeager
Assignee (at issue)
Standard Register, 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.