Granted Patent
Utility
US 6,137,879 · App. 09/130,745
Computer telephony headset amplifier
Inventors:
Costas Papadopoulos, David J. Truesdell, Daniel Davidson
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Aug 7, 1998
Inventors
Costas Papadopoulos
David J. Truesdell
Daniel Davidson
Assignee (at issue)
VXi 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.