Granted Patent
Utility
US 4,920,148 · App. 07/369,436
Insecticides and parasiticides
Inventor:
Jean-Claude Gehret
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Jun 21, 1989
Inventor
Jean-Claude Gehret
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.