Granted Patent
Utility
US 5,903,637 · App. 08/694,450
System and method for call conferencing
Inventors:
Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Keith E. Smith
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Aug 12, 1996
Inventors
Steven J. Hogan
Kristi T. Feltz
Douglas R. Murdock
Keith E. Smith
Assignee (at issue)
Link USA Corp.
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.