Granted Patent
Utility
US 4,456,472 · App. 06/444,959
Synergistic herbicidal combination
Inventor:
Bareld E. Groenwold
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Nov 29, 1982
Inventor
Bareld E. Groenwold
Assignee (at issue)
Stauffer Chemical 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.