Granted Patent
Utility
US 5,891,057 · App. 08/720,946
Carotid artery angioplasty guiding system
Inventors:
Gary A. Chaisson, Craig M. Walker
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Oct 4, 1996
Inventors
Gary A. Chaisson
Craig M. Walker
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.