Granted Patent
Utility
US 6,089,165 · App. 09/047,746
Railway truck with underslung equilizer beams
Inventors:
Richard B. Polley, Roger F. Sanzo, William C. Jones, Jr., Todd A. Porter
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Mar 24, 1998
Inventors
Richard B. Polley
Roger F. Sanzo
William C. Jones, Jr.
Todd A. Porter
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.