Granted Patent
Utility
US 4,850,995 · App. 07/087,162
Centrifugal separation of blood
Inventors:
Thomas K. Tie, Mark A. Holmes, Anne W. Rank
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Aug 19, 1987
Inventors
Thomas K. Tie
Mark A. Holmes
Anne W. Rank
Assignee (at issue)
Cobe Laboratories, 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.