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  • H04Q3/627
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  • Information Patent Application

    NURSE CALL SYSTEM

    • Publication number 20200258619
    • Publication date Aug 13, 2020
    • AIPHONE CO., LTD.
    • Kenichi OGAWA
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Data driven communication system

    • Publication number 20020144013
    • Publication date Oct 3, 2002
    • Deborah L. Pinard
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE