Granted Patent
Utility
US 6,204,871 · App. 09/456,435
Recording drum arrangement
Inventors:
Guido Keller, Markus Landolt
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Dec 8, 1999
Inventors
Guido Keller
Markus Landolt
Assignee (at issue)
Gretag Imaging 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.