Granted Patent
Utility
US 6,572,035 · App. 10/158,363
Rotary accelerating apparatus for a crop residue spreader of an agricultural combine
Inventor:
Dohn W. Pfeiffer
Patented Case
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Granted: Jun 3, 2003
Filed: May 30, 2002
Inventor
Dohn W. Pfeiffer
Assignee (at issue)
Case GmbH
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.