Granted Patent
Utility
US 6,676,364 · App. 09/367,133
Stack changing device
Inventors:
Peter Hummel, Robert Ortner
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Aug 5, 1999
Inventors
Peter Hummel
Robert Ortner
Assignee (at issue)
MAN Roland Druckmaschinen AG
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.