Granted Patent
Utility
US 6,711,623 · App. 09/568,515
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Inventors:
Hisao Furukawa, Shoji Miyaguchi
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: May 9, 2000
Inventors
Hisao Furukawa
Shoji Miyaguchi
Assignees (at issue)
The Distribution Systems Research Institute
Miyaguchi Research 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.