Granted Patent
Utility
US 6,115,466 · App. 09/038,938
Subscriber line system having a dual-mode filter for voice communications over a telephone line
Inventor:
Gregory L. Bella
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Mar 12, 1998
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.