Granted Patent
Utility
US 6,137,880 · App. 09/384,441
Passive splitter filter for digital subscriber line voice communication for complex impedance terminations
Inventor:
Gregory L. Bella
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Aug 27, 1999
Inventor
Gregory L. Bella
Assignee (at issue)
Westell 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.