Granted Patent
Utility
US 5,644,989 · App. 08/707,074
Double-decker railcar with continuous circulation on the upper deck and access from a high platform
Inventors:
Patrick Blanchier, Patrick Harguindeguy
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Sep 3, 1996
Inventors
Patrick Blanchier
Patrick Harguindeguy
Assignee (at issue)
GEC Alsthom Transport SA
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.