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发明名称
Schaltungsanordnung fuer Selbstanschluss-Fernsprechanlagen
摘要
申请公布号
DE495772(C)
申请公布日期
1930.04.16
申请号
DE1923S062546D
申请日期
1923.03.30
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
WASCHNACK ADOLF
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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