Granted Patent
Utility
US 4,263,280 · App. 06/028,032
Synergistic mixtures
Inventors:
Friedrich Kradolfer, Otokar Zak
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Apr 9, 1979
Inventors
Friedrich Kradolfer
Otokar Zak
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.