Granted Patent
Utility
US 4,265,182 · App. 06/054,390
Damping railway car truck
Inventors:
Robert K. Neff, David P. Hillstead
Patented Case
View Patent ↗
Granted: May 5, 1981
Filed: Jul 2, 1979
Inventors
Robert K. Neff
David P. Hillstead
Assignee (at issue)
ACF Industries Incorporated
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.