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发明名称
Schaltungsanordnungen fuer Fernmelde-, insbesondere Fernsprechanlagen zur Anschaltung eines Fernsprechauftragsdienstes
摘要
申请公布号
DE1007381(B)
申请公布日期
1957.05.02
申请号
DE1955S046693
申请日期
1955.12.13
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
EHRICKE DIPL.-ING. ERICH
分类号
H04M3/51
主分类号
H04M3/51
代理机构
代理人
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地址
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