Granted Patent
Utility
US 6,684,775 · App. 09/876,764
Printing unit with roll-away inkers
Inventors:
Charles Henry Dufour, Charles Reif Hammond, John Thomas Lorrey
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Jun 7, 2001
Inventors
Charles Henry Dufour
Charles Reif Hammond
John Thomas Lorrey
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.