Granted Patent
Utility
US 4,500,521 · App. 06/500,491
Pesticidal composition containing a synergistic combination of an oxazolo-pyridine thiophosphate derivative and cypermethrin
Inventor:
Volker Dittrich
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jun 2, 1983
Inventor
Volker Dittrich
Assignee (at issue)
Ciba-Geigy
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.