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发明名称
摘要
申请公布号
DE1049928(B)
申请公布日期
1959.02.05
申请号
DE1953W011743
申请日期
1953.08.21
申请人
发明人
分类号
G08B5/22;H04L12/18;H04M11/02
主分类号
G08B5/22
代理机构
代理人
主权项
地址
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