Granted Patent
Utility
US 4,606,698 · App. 06/628,727
Centrifugal blood pump with tapered shaft seal
Inventors:
Earl W. Clausen, Lloyd C. Hubbard
Patented Case
View Patent ↗
Granted: Aug 19, 1986
Filed: Jul 9, 1984
Inventors
Earl W. Clausen
Lloyd C. Hubbard
Assignee (at issue)
MICI Limited Partnership IV
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.