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经营范围
发明名称
TELEPHONE MONITORING SYSTEM
摘要
申请公布号
GB8619562(D0)
申请公布日期
1986.09.24
申请号
GB19860019562
申请日期
1986.08.11
申请人
OFFER FACTOR LTD
发明人
分类号
H04M1/66;(IPC1-7):H04M1/66
主分类号
H04M1/66
代理机构
代理人
主权项
地址
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