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发明名称
Call metering in a key phone system
摘要
申请公布号
GB9621230(D0)
申请公布日期
1996.11.27
申请号
GB19960021230
申请日期
1996.10.11
申请人
SAMSUNG ELECTRONICS CO LIMITED
发明人
分类号
H04M15/28;H04M15/34
主分类号
H04M15/28
代理机构
代理人
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地址
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