Granted Patent
Utility
US 4,448,075 · App. 06/260,992
Ultrasonic scanning apparatus
Inventors:
Yasuhiko Takemura, Fumihiko Akutsu
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: May 6, 1981
Inventors
Yasuhiko Takemura
Fumihiko Akutsu
Assignee (at issue)
Tokyo Shibaura Denki Kabushiki Kaisha
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.