Granted Patent
Utility
US 6,643,364 · App. 09/572,346
Providing telephony services
Inventor:
Richard J. Takahashi
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: May 17, 2000
Inventor
Richard J. Takahashi
Assignee (at issue)
Intel 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.