Granted Patent
Utility
US 5,361,394 · App. 07/869,113
Upstream signal control apparatus for cable television system
Inventor:
Hideo Shigihara
Patented Case
View Patent ↗
Granted: Nov 1, 1994
Filed: Apr 15, 1992
Inventor
Hideo Shigihara
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.