Granted Patent
Utility
US 5,631,846 · App. 08/396,042
Upstream communications for interactive networks
Inventor:
Edward Stanley Szurkowski
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Feb 28, 1995
Inventor
Edward Stanley Szurkowski
Assignee (at issue)
LUCENT TECHNOLOGIES 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.