Granted Patent
Utility
US 6,781,981 · App. 09/150,817
Adding DSL services to a digital loop carrier system
Inventor:
Mahlon D. Kimbrough
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Sep 11, 1998
Inventor
Mahlon D. Kimbrough
Assignee (at issue)
Advanced Fibre Access 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.