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经营范围
发明名称
Gespraechszeitmesser fuer Fernsprechanlagen
摘要
申请公布号
DE572462(C)
申请公布日期
1933.03.17
申请号
DE1931T038574D
申请日期
1931.03.21
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
G06M1/10;H04M15/28
主分类号
G06M1/10
代理机构
代理人
主权项
地址
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