Granted Patent
Utility
US 6,506,476 · App. 09/381,640
Printed document having a value, with luminescent authenticity feature
Inventors:
Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Nov 30, 1999
Inventors
Wittich Kaule
Gerhard Schwenk
Gerhard Stenzel
Assignee (at issue)
Glesecke & Devrient GmbH
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.