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发明名称
摘要
申请公布号
NL6813344(A)
申请公布日期
1969.04.01
申请号
NL19680013344
申请日期
1968.09.18
申请人
发明人
分类号
H04M17/02;(IPC1-7):H04M17/00
主分类号
H04M17/02
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