Granted Patent
Utility
US 4,458,366 · App. 06/405,763
Artificial implantable blood pump
Inventor:
David C. MacGregor
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Aug 6, 1982
Inventor
David C. MacGregor
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.