Granted Patent
Utility
US 4,392,339 · App. 06/324,814
Crop windrowing machine having double windrow-forming attachment
Inventors:
Marc A. Berlivet, Abel A. J. Guerineau
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Nov 25, 1981
Inventors
Marc A. Berlivet
Abel A. J. Guerineau
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.