Granted Patent
Utility
US 4,285,622 · App. 06/063,901
Apparatus for feeding material out of silos or from stacks
Inventor:
Louis-R Allard
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Aug 6, 1979
Inventor
Louis-R Allard
Assignee (at issue)
Beloit Corporation
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.