Granted Patent
Utility
US 6,217,548 · App. 09/421,155
Cardioplegia balloon cannula
Inventors:
Ross S. Tsugita, Tracy D. Maahs
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Oct 19, 1999
Inventors
Ross S. Tsugita
Tracy D. Maahs
Assignee (at issue)
Embolx, 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.