Granted Patent
Utility
US 5,119,931 · App. 07/698,891
Flexible joint for augers
Inventor:
Roger S. Barenthsen
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: May 13, 1991
Inventor
Roger S. Barenthsen
Assignee (at issue)
Alloway Manufacturing
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.