Granted Patent
Utility
US 4,285,937 · App. 06/089,677
Novel androstadiene-17-carboxylic acid esters
Inventor:
Jaroslav Kalvoda
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Oct 30, 1979
Inventor
Jaroslav Kalvoda
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.