Granted Patent
Utility
US 6,421,576 · App. 09/254,293
Method and device to control an engraving device
Inventor:
Gerald Sermund
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jun 1, 1999
Inventor
Gerald Sermund
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.