Granted Patent
Utility
US 4,478,030 · App. 06/301,723
Machine for cutting forage plants
Inventors:
Robert E. J. Druais, Damien M. M. Barbeau
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Sep 14, 1981
Inventors
Robert E. J. Druais
Damien M. M. Barbeau
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.