Granted Patent
Utility
US 6,201,818 · App. 08/910,556
Bi-directional telecommunication link in a cable television system
Inventors:
Heikki Kokkinen, Juha Pihlaja
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Aug 18, 1997
Inventors
Heikki Kokkinen
Juha Pihlaja
Assignee (at issue)
Nokia Technology
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.