Granted Patent
Utility
US 6,658,352 · App. 09/979,514
Navigation system
Inventors:
Yuichi Abe, Tomoyuki Yoshimura, Susumu Iida, Akiyoshi Yamamoto
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Nov 14, 2001
Inventors
Yuichi Abe
Tomoyuki Yoshimura
Susumu Iida
Akiyoshi Yamamoto
Assignee (at issue)
SANYO ELECTRIC 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.