Granted Patent
Utility
US 5,640,193 · App. 08/290,663
Multimedia service access by reading marks on an object
Inventor:
Pierre D. Wellner
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Aug 15, 1994
Inventor
Pierre D. Wellner
Assignee (at issue)
LUCENT TECHNOLOGIES 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.