Granted Patent
Utility
US 5,411,552 · App. 08/261,235
Valve prothesis for implantation in the body and a catheter for implanting such valve prothesis
Inventors:
Henning Rud Andersen, John Michael Hasenkam, Lars Knudsen
Patented Case
View Patent ↗
Granted: May 2, 1995
Filed: Jun 14, 1994
Inventors
Henning Rud Andersen
John Michael Hasenkam
Lars Knudsen
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.