Granted Patent
Utility
US 6,551,303 · App. 09/428,008
Barrier device for ostium of left atrial appendage
Inventors:
Robert A. Van Tassel, Robert G. Hauser
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Oct 27, 1999
Inventors
Robert A. Van Tassel
Robert G. Hauser
Assignee (at issue)
Atritech, 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.