Granted Patent
Utility
US 5,993,384 · App. 09/200,177
Vessel isolating retractor cannula and method
Inventors:
John P. Lunsford, Charles Gresl, Albert K. Chin, John W. Davis, Tenny Chang, Jeffrey W. Baxter
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Nov 25, 1998
Inventors
John P. Lunsford
Charles Gresl
Albert K. Chin
John W. Davis
Tenny Chang
Jeffrey W. Baxter
Assignee (at issue)
Origin Medsystems, 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.