Granted Patent
Utility
US 5,507,293 · App. 08/354,003
Ultrasonic diagnostic apparatus
Inventors:
Yoshinao Tannaka, Yasuhiro Nakamura, Yuzo Yoshimoto
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Dec 5, 1994
Inventors
Yoshinao Tannaka
Yasuhiro Nakamura
Yuzo Yoshimoto
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.