Granted Patent
Utility
US 6,428,552 · App. 09/768,376
Method and apparatus for crossing intravascular occlusions
Inventor:
Kurt D. Sparks
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jan 22, 2001
Inventor
Kurt D. Sparks
Assignee (at issue)
LuMend, 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.