Granted Patent
Utility
US 5,845,881 · App. 08/920,777
Railroad trackwork intersections
Inventors:
Keith Young, Stephen R. Kuhn, Joan Q. Xia, Thomas S. Baker, Jr.
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Aug 29, 1997
Inventors
Keith Young
Stephen R. Kuhn
Joan Q. Xia
Thomas S. Baker, Jr.
Assignee (at issue)
ABC Rail Products Corporation
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.