Granted Patent
Utility
US 4,764,370 · App. 06/650,282
Vaccine utilizing an avirulent strain of Salmonella typhimurium
Inventors:
Patricia Fields, Constantine G. Haidaris, Frederick L. Heffron
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Sep 12, 1984
Inventors
Patricia Fields
Constantine G. Haidaris
Frederick L. Heffron
Assignee (at issue)
Scripps Clinic and Research Foundation
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.