Granted Patent
Utility
US 6,831,965 · App. 09/938,130
Method and apparatus for testing telephone lines
Inventors:
Marshall William Pharoah, Wilbur A. Carpenter
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Aug 23, 2001
Inventors
Marshall William Pharoah
Wilbur A. Carpenter
Assignee (at issue)
MITEL KNOWLEDGE CORPORATION
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.