Granted Patent
Utility
US 6,834,909 · App. 10/363,002
Door fastening
Inventors:
Thomas Malfent, Martin Kronateber
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: May 27, 2003
Inventors
Thomas Malfent
Martin Kronateber
Assignee (at issue)
Siemens SGP Verkehrstechnik GmbH
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.