Granted Patent
Utility
US 6,400,281 · App. 09/042,722
Communications system and method for interconnected networks having a linear topology, especially railways
Inventors:
Albert D. Darby, Jr., David Michael Peltz, Mark Hefner, Irfan Ali, William Cherrick Schoonmaker, George Jarman
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Mar 17, 1998
Inventors
Albert D. Darby, Jr.
David Michael Peltz
Mark Hefner
Irfan Ali
William Cherrick Schoonmaker
George Jarman
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.