Granted Patent
Utility
US 6,302,020 · App. 09/380,851
Method and device for engraving impression cyclinders
Inventors:
Karsten Becker, Bernd Lübcke, Reinhold Bruno Bleihofer-Sterzinger
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Nov 18, 1999
Inventors
Karsten Becker
Bernd Lübcke
Reinhold Bruno Bleihofer-Sterzinger
Assignee (at issue)
Heidelberger 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.