Granted Patent
Utility
US 4,640,785 · App. 06/685,801
Separation of lymphocytes and monocytes from blood samples
Inventors:
Richard J. Carroll, Albert A. Luderer, Ward C. Smith, Anthony R. Zine, Jr.
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Dec 24, 1984
Inventors
Richard J. Carroll
Albert A. Luderer
Ward C. Smith
Anthony R. Zine, Jr.
Assignee (at issue)
BECTON, DICKINSON AND 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.