Granted Patent
Utility
US 6,561,133 · App. 10/059,806
Grazing range expansion method
Inventor:
Mark Robbins
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jan 28, 2002
Inventor
Mark Robbins
Assignee (at issue)
Hubbard Feeds, Inc.
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.