Granted Patent
Utility
US 6,547,271 · App. 09/826,390
Trailer coupling
Inventors:
Emmerich Kleb, Michael Fischer, Hans Riehle
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Apr 4, 2001
Inventors
Emmerich Kleb
Michael Fischer
Hans Riehle
Assignee (at issue)
ORIS Fahrzeugteile Hans Riehle 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.