Granted Patent
Utility
US 6,464,642 · App. 09/641,888
Ultrasonic diagnosis apparatus
Inventor:
Tetsuya Kawagishi
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Aug 18, 2000
Inventor
Tetsuya Kawagishi
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.