Granted Patent
Utility
US 6,377,877 · App. 09/662,777
Method of determining railyard status using locomotive location
Inventor:
John R. Doner
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Sep 15, 2000
Inventor
John R. Doner
Assignee (at issue)
GE Harris Railway Electronics LLC
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.