Granted Patent
Utility
US 5,823,481 · App. 08/726,526
Method of transferring control of a railway vehicle in a communication based signaling system
Inventor:
Kenneth M. Gottschlich
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Oct 7, 1996
Inventor
Kenneth M. Gottschlich
Assignee (at issue)
Union Switch & Signal, 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.