Granted Patent
Utility
US 6,496,981 · App. 08/933,666
System for converting media content for interactive TV use
Inventors:
Douglass A. Wistendahl, Leighton K. Chong
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Sep 19, 1997
Inventors
Douglass A. Wistendahl
Leighton K. Chong
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.