Granted Patent
Utility
US 6,168,614 · App. 09/026,574
Valve prosthesis for implantation in the body
Inventors:
Henning Rud Andersen, John Michael Hasenkam, Lars Knudsen
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Feb 20, 1998
Inventors
Henning Rud Andersen
John Michael Hasenkam
Lars Knudsen
Assignee (at issue)
Heartport, 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.