Granted Patent
Utility
US 5,874,985 · App. 08/968,386
Message delivery method for interactive televideo system
Inventor:
Joseph H. Matthews, III
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Nov 12, 1997
Inventor
Joseph H. Matthews, III
Assignee (at issue)
Microsoft 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.