Granted Patent
Utility
US 4,238,039 · App. 06/027,340
Railway car coupler wear liner
Inventors:
Jerry W. Cooper, Homer N. Holden, Richard D. Medford, John S. Haley
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Apr 5, 1979
Inventors
Jerry W. Cooper
Homer N. Holden
Richard D. Medford
John S. Haley
Assignee (at issue)
DayCo Holdings, LP
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.