Granted Patent
Utility
US 5,762,003 · App. 08/805,997
Railroad hopper car underframe transition casting
Inventors:
John R. Downes, Carl D. McClurg
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Feb 24, 1997
Inventors
John R. Downes
Carl D. McClurg
Assignee (at issue)
Buckeye Steel Castings Company
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.