Granted Patent
Utility
US 4,398,872 · App. 06/160,965
Auxiliary powered drive for roller pump used in cardiopulmonary bypass operations
Inventors:
Jonathan T. Fleenor, George W. Long, John M. Dawson
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Jun 19, 1980
Inventors
Jonathan T. Fleenor
George W. Long
John M. Dawson
Assignee (at issue)
Trinity Lutheran Hospital
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.