Granted Patent
Utility
US 6,081,291 · App. 08/842,745
Methods and systems for multimedia communication via public telephone networks
Inventor:
Lester F. Ludwig
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Apr 16, 1997
Inventor
Lester F. Ludwig
Assignee (at issue)
VCT, 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.