Granted Patent
Utility
US 6,707,797 · App. 09/177,712
Multi-line telephony via network gateways
Inventors:
Steven E. Gardell, Barbara Mayne Kelly, Israel B. Zibman
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Oct 23, 1998
Inventors
Steven E. Gardell
Barbara Mayne Kelly
Israel B. Zibman
Assignees (at issue)
VERIZON CORPORATE SERVICES GROUP INC.
Genuity Group, LLC
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.