Granted Patent
Utility
US 6,412,332 · App. 09/386,202
Method and apparatus for detecting objects dragging beneath a train
Inventor:
Mark Joseph Bartonek
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Aug 31, 1999
Inventor
Mark Joseph Bartonek
Assignee (at issue)
General Electric Company
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.