Granted Patent
Utility
US 6,025,670 · App. 09/025,540
Miniature, high efficiency dual frequency ultrasonic transducer with selectable beamwidth
Inventors:
Paul Douglas Corl, Michael C. Pao, Vincent A. Barletta, Victor Chechelski
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Feb 18, 1998
Inventors
Paul Douglas Corl
Michael C. Pao
Vincent A. Barletta
Victor Chechelski
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.