Granted Patent
Utility
US 5,917,809 · App. 08/779,806
Asymmetric digital subscriber loop modem and method
Inventors:
David Byrd Ribner, David H. Robertson
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Jan 8, 1997
Inventors
David Byrd Ribner
David H. Robertson
Assignee (at issue)
Analog Devices, 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.