Granted Patent
Utility
US 5,546,449 · App. 08/487,978
System and method for call conferencing
Inventors:
Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Keith E. Smith
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Jun 7, 1995
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.