Granted Patent
Utility
US 5,450,580 · App. 07/873,130
Data base retrieval system utilizing stored vicinity feature valves
Inventor:
Hiroshi Takada
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Apr 24, 1992
Inventor
Hiroshi Takada
Assignee (at issue)
NIPPON STEEL CORPORATION
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.