Granted Patent
Utility
US 4,778,809 · App. 06/895,979
5-esters of milbemycins for controlling parasitic pests
Inventors:
Peter Maienfisch, Elmar Sturm
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Aug 13, 1986
Inventors
Peter Maienfisch
Elmar Sturm
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.