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发明名称
Prepayment systems
摘要
申请公布号
GB2312772(B)
申请公布日期
1998.04.15
申请号
GB19970016150
申请日期
1997.08.01
申请人
* SCHLUMBERGER INDUSTRIES LIMITED
发明人
DAVID JOHN * CLARKE;JEREMY LEE * METTERS;NEVILLE JAMES * PATTINSON
分类号
G07F7/08;G07F7/12;G07F15/00;(IPC1-7):G07F7/02
主分类号
G07F7/08
代理机构
代理人
主权项
地址
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