Granted Patent
Utility
US 4,692,469 · App. 06/848,661
Propylamine derivatives
Inventor:
Jeffrey W. H. Watthey
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Apr 4, 1986
Inventor
Jeffrey W. H. Watthey
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.