Granted Patent
Utility
US 5,228,280 · App. 07/811,073
Round baler having anti-wrapping core starter
Inventors:
Howard J. Ratzlaff, Ferol S. Fell
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Dec 20, 1991
Inventors
Howard J. Ratzlaff
Ferol S. Fell
Assignee (at issue)
Hay & Forage Industries
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.