Granted Patent
Utility
US 6,231,492 · App. 09/075,774
Cutting drum having circumferentially adjustable cutting blades for use on a rotary press folding machine
Inventor:
David N. Graag
Patented Case
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Granted: May 15, 2001
Filed: May 11, 1998
Inventor
David N. Graag
Assignee (at issue)
Goss Graphic Systems Limited
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.