Granted Patent
Utility
US 5,226,421 · App. 07/848,428
Doppler elongate flexible member having an inflatable balloon mounted thereon
Inventors:
Jeffrey S. Frisbie, Menahem Nassi
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Mar 6, 1992
Inventors
Jeffrey S. Frisbie
Menahem Nassi
Assignee (at issue)
Cardiometrics, 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.