Granted Patent
Utility
US 4,859,657 · App. 07/068,692
Pesticides
Inventors:
Anthony Cornelius O'Sullivan, Bruno Frei
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Jun 30, 1987
Inventors
Anthony Cornelius O'Sullivan
Bruno Frei
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.