Granted Patent
Utility
US 4,301,158 · App. 06/139,435
N-(2-Propynyl)-2,6-dinitro-benzenamine derivatives
Inventor:
Homer K. Spencer
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Apr 11, 1980
Inventor
Homer K. Spencer
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.