Granted Patent
Utility
US 6,744,909 · App. 09/377,257
Authentication system and method
Inventors:
Andrew Kostrzewski, Gajendra D. Savant, Tomasz Jannson, Joanna L. Jannson
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Aug 19, 1999
Inventors
Andrew Kostrzewski
Gajendra D. Savant
Tomasz Jannson
Joanna L. Jannson
Assignee (at issue)
PHYSICAL OPTICS 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.