Granted Patent
Utility
US 6,503,272 · App. 09/813,586
Stent-based venous valves
Inventors:
Thomas Duerig, Andreas Melzer
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Mar 21, 2001
Inventors
Thomas Duerig
Andreas Melzer
Assignee (at issue)
CORDIS CORPORATION
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.