Granted Patent
Utility
US 5,483,587 · App. 08/257,622
System and method for call conferencing
Inventors:
Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Keith E. Smith
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Jun 8, 1994
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.