Granted Patent
Utility
US 4,856,529 · App. 07/011,615
Ultrasonic pulmonary artery catheter and method
Inventor:
Jerome Segal
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Feb 6, 1987
Inventor
Jerome Segal
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.