Granted Patent
Utility
US 5,285,681 · App. 07/759,102
On-line pellet durability tester
Inventors:
Stephen F. Binder, Lawrence F. Reutzel, David Rothermel
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Sep 6, 1991
Inventors
Stephen F. Binder
Lawrence F. Reutzel
David Rothermel
Assignee (at issue)
PURINA MILLS, LLC
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.