Granted Patent
Utility
US 5,828,743 · App. 08/439,587
Apparatus and method for automated audio teleconferencing having enhanced access and security features
Inventors:
William E. Pinnell, James H. Campbell, IV
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: May 12, 1995
Inventors
William E. Pinnell
James H. Campbell, IV
Assignee (at issue)
Protel, 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.