Granted Patent
Utility
US 4,239,893 · App. 06/096,189
Dihydropyridine derivatives
Inventors:
Charles Pigerol, Marie-Madeleine Chandavoine, Paul de Cointet DE Fillain
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Nov 20, 1979
Inventors
Charles Pigerol
Marie-Madeleine Chandavoine
Paul de Cointet DE Fillain
Assignee (at issue)
Labaz
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.