Granted Patent
Utility
US 5,137,721 · App. 07/307,223
Employing strains of E. coli expressing non-indigenous adhesins and toxoids of E. coli
Inventor:
Walter S. Dallas
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: Feb 6, 1989
Inventor
Walter S. Dallas
Assignee (at issue)
Cetus 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.