Granted Patent
Utility
US 6,807,774 · App. 10/074,994
Greaseless fulcrum for a railcar door
Inventors:
Scot J. Nottingham, Robert T. Jackson
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Feb 13, 2002
Inventors
Scot J. Nottingham
Robert T. Jackson
Assignee (at issue)
YSD Industries 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.