Granted Patent
Utility
US 6,735,208 · App. 09/260,993
LAN telephone system
Inventors:
Ernst B. Riemann, Alan Weir, Randall Vyskocil, David F. Niesman, M. A. Kergozou
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Mar 1, 1999
Inventors
Ernst B. Riemann
Alan Weir
Randall Vyskocil
David F. Niesman
M. A. Kergozou
Assignee (at issue)
Sphere Communications, 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.