Granted Patent
Utility
US 6,574,308 · App. 09/851,457
Digital subscriber line diagnostic system
Inventors:
Alistair M. Macdonald, Joseph Q. Chapman
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: May 8, 2001
Inventors
Alistair M. Macdonald
Joseph Q. Chapman
Assignee (at issue)
PARADYNE 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.