Granted Patent
Utility
US 5,638,821 · App. 08/602,644
Ultrasound diagnostics system for obtaining a tomographic image
Inventors:
Yasuhiro Nakamura, Seiji Aoki
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Feb 16, 1996
Inventors
Yasuhiro Nakamura
Seiji Aoki
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.