Granted Patent
Utility
US 6,672,040 · App. 10/214,210
Auger for combine header
Inventor:
David M. Lauer
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Aug 7, 2002
Inventor
David M. Lauer
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.