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发明名称
摘要
申请公布号
NL6818127(A)
申请公布日期
1969.06.20
申请号
NL19680018127
申请日期
1968.12.17
申请人
发明人
分类号
H04Q1/14;(IPC1-7):H04Q1/02
主分类号
H04Q1/14
代理机构
代理人
主权项
地址
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