Granted Patent
Utility
US 4,819,418 · App. 07/102,040
Simplified crop baler
Inventors:
Howard J. Ratzlaff, Ferol S. Fell
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Sep 29, 1987
Inventors
Howard J. Ratzlaff
Ferol S. Fell
Assignee (at issue)
Hesston 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.