Granted Patent
Utility
US 4,968,615 · App. 06/810,470
Deoxyribonucleic acid segment from a virus
Inventors:
Ulrich Koszinowski, Gunther Keil, Karoline Dorsch-Hasler, Walter E. Schaffner
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Dec 18, 1985
Inventors
Ulrich Koszinowski
Gunther Keil
Karoline Dorsch-Hasler
Walter E. Schaffner
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.