Granted Patent
Utility
US 4,313,754 · App. 06/115,838
Polysubstituted butanoic acids, esters and derivatives thereof utilizing the same as herbicides
Inventor:
Stephen S. Szucs
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Jan 28, 1980
Inventor
Stephen S. Szucs
Assignee (at issue)
American Cyanamid 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.