Granted Patent
Utility
US 5,993,391 · App. 09/159,507
Ultrasound diagnostic apparatus
Inventor:
Naohisa Kamiyama
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Sep 24, 1998
Inventor
Naohisa Kamiyama
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.