Granted Patent
Utility
US 4,407,804 · App. 06/393,805
Analgesic mixture of nalbuphine and indomethacin
Inventor:
William K. Schmidt
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Jun 30, 1982
Inventor
William K. Schmidt
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.