Granted Patent
Utility
US 6,176,848 · App. 09/155,818
Intravascular blood pump
Inventors:
Guenter Rau, Helmut Reul, Thorsten Siess
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Oct 5, 1998
Inventors
Guenter Rau
Helmut Reul
Thorsten Siess
Assignee (at issue)
Impella Cardiotechnik AG
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.