Granted Patent
Utility
US 5,828,321 · App. 07/878,500
Location detecting system
Inventor:
Shin-ichi Matsuzaki
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: May 5, 1992
Inventor
Shin-ichi Matsuzaki
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.