CARD HOLDER FOR RADIO CARD SYSTEM, AND RADIO CARD SYSTEM

PROBLEM TO BE SOLVED: To enable healthy persons and physically challenging handicapped persons having the difficulty in the eyes or ears to surely confirm entering/ leaving by using a radio card and further to effectively utilize the radio card spread at present without changing its standard, or the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIMURA TOMOHIRO, TEJIMA HARUMI
Format: Patent
Sprache:eng
Schlagworte:
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