Granted Patent
Utility
US 5,828,979 · App. 08/856,754
Automatic train control system and method
Inventors:
Alan L. Polivka, William L. Matheson
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: May 15, 1997
Inventors
Alan L. Polivka
William L. Matheson
Assignee (at issue)
HARRIS CORPORATION
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.