Granted Patent
Utility
US 4,690,927 · App. 06/825,293
Pharmaceutical compositions with analgesic properties and the preparation and use thereof
Inventors:
Harald Voss, Herbert Rothweiler
Patented Case
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Granted: Sep 1, 1987
Filed: Feb 3, 1986
Inventors
Harald Voss
Herbert Rothweiler
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.