Granted Patent
Utility
US 6,428,559 · App. 09/824,975
Removable, variable-diameter vascular filter system
Inventor:
Kirk Johnson
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Apr 3, 2001
Inventor
Kirk Johnson
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.