Granted Patent
Utility
US 4,755,619 · App. 06/842,857
Pharmaceutical compositions
Inventors:
Andrew M. Creighton, William A. Jeffery
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Mar 24, 1986
Inventors
Andrew M. Creighton
William A. Jeffery
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.