Granted Patent
Utility
US 6,286,437 · App. 09/166,675
Railway car outlet gate assembly
Inventor:
Anthony L. Lucas
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Oct 5, 1998
Inventor
Anthony L. Lucas
Assignee (at issue)
ASF Keystone, 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.