Granted Patent
Utility
US 6,434,528 · App. 09/451,061
Computer network telephony
Inventor:
Jeremy Sanders
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Nov 30, 1999
Inventor
Jeremy Sanders
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.