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发明名称
Schaltungsanordnung fuer Konferenzanlagen
摘要
申请公布号
DE636513(C)
申请公布日期
1936.10.10
申请号
DE1931S098990D
申请日期
1931.06.02
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
KOENIG DIPL.-ING. HERMANN-ERNST V.
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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