Granted Patent
Utility
US 5,866,887 · App. 08/922,600
Apparatus for detecting the number of passers
Inventors:
Kazuhiko Hashimoto, Nobuyuki Yoshiike, Katsuya Morinaka
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Sep 3, 1997
Inventors
Kazuhiko Hashimoto
Nobuyuki Yoshiike
Katsuya Morinaka
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.