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发明名称
TELEPHONE CALL COST CALCULATOR
摘要
申请公布号
GB2134749(B)
申请公布日期
1985.09.25
申请号
GB19830001428
申请日期
1983.01.19
申请人
JOHN * MILDWATER
发明人
JOHN * MILDWATER
分类号
H04M15/30;(IPC1-7):H04M15/30
主分类号
H04M15/30
代理机构
代理人
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