Granted Patent
Utility
US 5,813,635 · App. 08/979,310
Train separation detection
Inventor:
Emilio A. Fernandez
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Nov 26, 1997
Inventor
Emilio A. Fernandez
Assignee (at issue)
Westinghouse Air Brake Co.
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.