Granted Patent
Utility
US 6,340,394 · App. 09/520,652
Silo granular feed distribution and ladder chute apparatus
Inventor:
William H. Cook
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Mar 7, 2000
Inventor
William H. Cook
Assignee (at issue)
Arr-Maz Products, L.P.
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.