Granted Patent
Utility
US 4,619,921 · App. 06/601,746
Polyhalogeno-steroids
Inventors:
Jaroslav Kalvoda, Georg Anner
Patented Case
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Granted: Oct 28, 1986
Filed: Apr 20, 1984
Inventors
Jaroslav Kalvoda
Georg Anner
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.