Granted Patent
Utility
US 6,834,042 · App. 09/717,316
Internet telephone apparatus and method for an internet telephone set
Inventor:
Mikio Sugiyama
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Nov 22, 2000
Inventor
Mikio Sugiyama
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.