Granted Patent
Utility
US 6,320,878 · App. 08/971,971
Active demarcation point of an access network
Inventors:
Heinz Krimmel, Rainer Fritschi, Rolf Heidemann
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Nov 17, 1997
Inventors
Heinz Krimmel
Rainer Fritschi
Rolf Heidemann
Assignee (at issue)
ALCATEL
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.