Granted Patent
Utility
US 6,724,998 · App. 09/810,785
Image forming apparatus with variable toning bias offset service utility
Inventors:
Matthias H. Regelsberger, David E. Hockey, Anne F. Lairmore
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Mar 16, 2001
Inventors
Matthias H. Regelsberger
David E. Hockey
Anne F. Lairmore
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.