Granted Patent
Utility
US 4,798,839 · App. 06/586,961
Synergistic insecticidal compositions
Inventor:
Hafez M. Ayad
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Mar 7, 1984
Inventor
Hafez M. Ayad
Assignee (at issue)
Rhone-Poulenc Nederland B.V.
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.