Granted Patent
Utility
US 6,230,325 · App. 08/724,819
Information network system making use of television or radio broadcasting and broadcast receiving user terminal
Inventors:
Kazumoto Iinuma, Takanori Sashida
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Oct 2, 1996
Inventors
Kazumoto Iinuma
Takanori Sashida
Assignee (at issue)
NEC 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.