Granted Patent
Utility
US 6,284,256 · App. 09/281,221
Bordetella bronchiseptica vaccine
Inventors:
Paul Hendrik Maria Savelkoul, Willem Gaastra
Patented Case
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Granted: Sep 4, 2001
Filed: Mar 30, 1999
Inventors
Paul Hendrik Maria Savelkoul
Willem Gaastra
Assignee (at issue)
American Cyanamid 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.