Granted Patent
Utility
US 4,925,876 · App. 07/187,173
N-benzolyl-N'-trihalo-haloalkoxyphenylureas and pesticidal compositions containing them
Inventor:
Jozef Drabek
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Apr 28, 1988
Inventor
Jozef Drabek
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.