Granted Patent
Utility
US 6,470,083 · App. 08/998,166
Telecommunications off-hook and intrusion detection method and apparatus
Inventors:
Rodney C. Hemminger, Albert H. Maxwell, Jr., Michael A. Murphy, Thomas J. Van Heuklon, Richard L. Tenor, Todd Kelsey, Fred Schleifer
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Dec 24, 1997
Inventors
Rodney C. Hemminger
Albert H. Maxwell, Jr.
Michael A. Murphy
Thomas J. Van Heuklon
Richard L. Tenor
Todd Kelsey
Fred Schleifer
Assignee (at issue)
ABB Automation GmbH
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.