Granted Patent
Utility
US 4,617,306 · App. 06/775,985
Pharmaceutical preparation comprising co-dergocrine and a calcium antagonist
Inventors:
Dieter Welzel, Hans Buhlmann
Patented Case
View Patent ↗
Granted: Oct 14, 1986
Filed: Sep 13, 1985
Inventors
Dieter Welzel
Hans Buhlmann
Assignee (at issue)
Sandoz AG
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.