Granted Patent
Utility
US 6,696,685 · App. 10/167,114
Device for detecting properties of a moving web of paper with an infrared light source
Inventor:
Ursula Schumacher
Patented Case
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Granted: Feb 24, 2004
Filed: Jun 11, 2002
Inventor
Ursula Schumacher
Assignee (at issue)
Metso Paper Automation Oy
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.