Granted Patent
Utility
US 5,742,670 · App. 08/370,514
Passive telephone monitor to control collaborative systems
Inventor:
Richard Bennett
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Jan 9, 1995
Inventor
Richard Bennett
Assignee (at issue)
NCR 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.