Granted Patent
Utility
US 6,279,765 · App. 09/009,098
Railcar cushioning device with internal spring
Inventor:
Jay P. Monaco
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Jan 20, 1998
Inventor
Jay P. Monaco
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.