Granted Patent
Utility
US 6,720,525 · App. 10/134,443
Device for perforating rod-shaped articles, particularly in the tobacco-processing industry
Inventor:
Helmut Voss
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Apr 30, 2002
Inventor
Helmut Voss
Assignee (at issue)
HAUNI MASCHINENBAU 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.