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经营范围
发明名称
摘要
申请公布号
NL7804996(A)
申请公布日期
1978.11.13
申请号
NL19780004996
申请日期
1978.05.09
申请人
发明人
分类号
H04M3/56;(IPC1-7):H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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