Granted Patent
Utility
US 6,428,468 · App. 09/586,825
Apparatus and method for vein removal
Inventors:
David R. Knighton, Vance D. Fiegel
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jun 5, 2000
Inventors
David R. Knighton
Vance D. Fiegel
Assignee (at issue)
Cardiothoracic Systems, 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.