Granted Patent
Utility
US 5,519,817 · App. 08/019,707
Method and apparatus for searching line data in graphic data base system
Inventors:
Sakura Shinoaki, Hiroto Sato, Kyozo Tanaka
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Feb 19, 1993
Inventors
Sakura Shinoaki
Hiroto Sato
Kyozo Tanaka
Assignee (at issue)
TOKYO GAS CO., 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.