Granted Patent
Utility
US 4,415,040 · App. 06/290,903
Fully mounted variable width plow
Inventor:
Henri E. Salva
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Aug 7, 1981
Inventor
Henri E. Salva
Assignee (at issue)
International Harvester Company
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.