Granted Patent
Utility
US 4,383,848 · App. 06/314,593
Polysubstituted butanoic acids, esters and derivatives thereof utilizing the same as herbicides
Inventor:
Stephen Szucs
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Oct 26, 1981
Inventor
Stephen 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.