Granted Patent
Utility
US 6,339,591 · App. 08/831,790
System and method for transmitting voice messages through the internet
Inventor:
Taka Migimatsu
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: Apr 9, 1997
Inventor
Taka Migimatsu
Assignee (at issue)
Ele Tel, 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.