Granted Patent
Utility
US 4,784,589 · App. 07/008,880
Purification of pertussis antigens
Inventors:
Andrew Robinson, Laurence I. Irons
Patented Case
View Patent ↗
Granted: Nov 15, 1988
Filed: Jan 20, 1987
Inventors
Andrew Robinson
Laurence I. Irons
Assignee (at issue)
Public Health Laboratory Service Board
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.