发明名称 Prepayment System For Electric Power Meters Using A Contactless Smart Card With An Automatic Supply Cut-Off Device
摘要 The present invention refers to the use of a meter completely integrated on a single piece, totally covered and without contact with the exterior that incorporates a prepayment system and a more efficient method to control the electric energy supply and obtains excellent information from the meter by means of contactless intelligent cards.
申请公布号 US2008033892(A1) 申请公布日期 2008.02.07
申请号 US20050665440 申请日期 2005.09.30
申请人 IUSA S.A. DE C.V. 发明人 NERI-BADILLO EDUARDO A.
分类号 G06Q99/00;G06Q30/00 主分类号 G06Q99/00
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