Granted Patent
Utility
US 6,741,369 · App. 09/445,121
Method for the operating an engraving member
Inventor:
Siegfried Beisswenger
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Feb 17, 2000
Inventor
Siegfried Beisswenger
Assignee (at issue)
Hell Gravure Systems 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.