Granted Patent
Utility
US 5,653,388 · App. 08/610,684
Method and apparatus for constructing a permanent railroad track
Inventors:
Dieter Pietschmann, Hans Bachmann, Pierre-Olivier Boutin, Winfried Mohr, Gilles de Pontbriand, Franz Geissler
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Mar 4, 1996
Inventors
Dieter Pietschmann
Hans Bachmann
Pierre-Olivier Boutin
Winfried Mohr
Gilles de Pontbriand
Franz Geissler
Assignee (at issue)
Pfleiderer Verkehrstechnik GmbH & Co. KG
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.