Granted Patent
Utility
US 6,215,484 · App. 09/429,852
Compressed digital-data interactive program system
Inventors:
Michael J. Freeman, Gregory W. Harper
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Oct 28, 1999
Inventors
Michael J. Freeman
Gregory W. Harper
Assignee (at issue)
ACTV 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.