Granted Patent
Utility
US 6,553,494 · App. 09/358,593
Method and apparatus for applying and verifying a biometric-based digital signature to an electronic document
Inventor:
Randal Glass
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Jul 21, 1999
Inventor
Randal Glass
Assignee (at issue)
Sensar, 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.