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发明名称
摘要
申请公布号
BE671724(A)
申请公布日期
1966.05.03
申请号
BE19650671724
申请日期
1965.11.03
申请人
发明人
分类号
G04G7/00;H04L7/00;H04L7/02;H04L7/033
主分类号
G04G7/00
代理机构
代理人
主权项
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