Granted Patent
Utility
US 4,211,774 · App. 05/889,163
Bacterial polysaccharide S-21 and complex thereof
Inventors:
Kenneth S. Kang, George T. Veeder, III
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Mar 23, 1978
Inventors
Kenneth S. Kang
George T. Veeder, III
Assignee (at issue)
MERCK & CO., INC.
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.