Granted Patent
Utility
US 6,195,358 · App. 08/914,111
Internet telephony signal conversion
Inventors:
Ronald John Bowater, Simon Davies, Lawrence Leon Porter, Mark Thomas
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Aug 19, 1997
Inventors
Ronald John Bowater
Simon Davies
Lawrence Leon Porter
Mark Thomas
Assignee (at issue)
International Business Machines 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.