Granted Patent
Utility
US 4,275,550 · App. 06/084,583
Crop baler
Inventors:
Edward L. Swenson, Howard L. Ratzlaff
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Oct 15, 1979
Inventors
Edward L. Swenson
Howard L. Ratzlaff
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.