发明名称 Port expander for utility meter reading
摘要 An electronic expander (12) allows for reading a plurality of utility meters (14) with an interrogation device (30) via a common electronic access point (16) wherein the interrogation device (30) interrogates and receives meter usage data from all of the meters (14) during a single coupling with the common electronic access point (16).
申请公布号 US5856791(A) 申请公布日期 1999.01.05
申请号 US19960658238 申请日期 1996.06.04
申请人 M&FC HOLDING COMPANY, INC. 发明人 GRAY, BRUCE E.;BELSKI, TIMOTHY J.
分类号 H04M11/00;(IPC1-7):H04Q11/00 主分类号 H04M11/00
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