Granted Patent
Utility
US 6,422,113 · App. 09/424,946
Knife drum for machines for cross-cutting lines of material
Inventor:
Albrecht Blume
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Dec 3, 1999
Inventor
Albrecht Blume
Assignee (at issue)
Jagenberg Papiertechnik 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.