Granted Patent
Utility
US 5,840,070 · App. 08/910,375
Sealless rotary blood pump
Inventor:
Richard K. Wampler
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Aug 13, 1997
Inventor
Richard K. Wampler
Assignee (at issue)
Kriton Medical, 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.