Granted Patent
Utility
US 4,715,059 · App. 06/795,967
Conversational video phone
Inventors:
Michael A. Cooper-Hart, Lawrence D. Emmons, James S. Mackley, David Stokes
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Nov 7, 1985
Inventors
Michael A. Cooper-Hart
Lawrence D. Emmons
James S. Mackley
David Stokes
Assignee (at issue)
Luma Telecom Incorporated
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.