Granted Patent
Utility
US 6,733,458 · App. 09/962,488
Diagnostic medical ultrasound systems and methods using image based freehand needle guidance
Inventors:
Robert W. Steins, Ann Shvarts, Thilaka Sumanaweera
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Sep 25, 2001
Inventors
Robert W. Steins
Ann Shvarts
Thilaka Sumanaweera
Assignee (at issue)
ACUSON
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.