Granted Patent
Utility
US 6,370,381 · App. 09/239,690
Multiple channel communications system
Inventors:
James A. Minnick, Michael Bueter, Jeffrey Coil, David C. Krueger
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Jan 29, 1999
Inventors
James A. Minnick
Michael Bueter
Jeffrey Coil
David C. Krueger
Assignee (at issue)
Siemens Transportation Systems, Inc.
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.