Granted Patent
Utility
US 5,781,740 · App. 08/597,191
Multimedia communication system
Inventor:
Mitsumasa Tanaka
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Feb 6, 1996
Inventor
Mitsumasa Tanaka
Assignee (at issue)
NEC CORPORATION
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.