发明名称 Prepayment system for supplying water or gas by means of a wireless intelligent card and meter for said system
摘要 <p>A prepayment system for supplying water or gas by means of a wireless intelligent card is described. The present invention also relates to a bidirectional meter specially designed to electronically record the consumption of water or gas.</p>
申请公布号 IS50005(A) 申请公布日期 2011.02.03
申请号 IS20110050005 申请日期 2011.02.03
申请人 SISTEMAS INTEGRALES DE MEDICION Y CONTROL STELLUMS.A. DE C.V. 发明人 EDUARDO AGUSTIN NERI-BADILLO
分类号 G06Q50/00;G01D4/00;G01F15/06;G06Q20/00 主分类号 G06Q50/00
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