Granted Patent
Utility
US 6,356,539 · App. 09/142,918
Interactive satellite broadcast system
Inventors:
Michael Zuliani, Hans-Christian Haugli
Patented Case
View Patent ↗
Granted: Mar 12, 2002
Filed: Dec 10, 1998
Inventors
Michael Zuliani
Hans-Christian Haugli
Assignee (at issue)
Vistar Telecommunications 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.