Granted Patent
Utility
US 4,240,409 · App. 06/013,636
Apparatus for assisting circulation of blood
Inventors:
William J. Robinson, Victor Poirier, Benedict D. T. Daly
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Feb 21, 1979
Inventors
William J. Robinson
Victor Poirier
Benedict D. T. Daly
Assignee (at issue)
Thermo Electron GmbH
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.