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发明名称
Schaltungsanordnung fuer Fernsprechanlagen
摘要
申请公布号
DE635919(C)
申请公布日期
1936.10.01
申请号
DE1933M123029D
申请日期
1933.02.26
申请人
FRIEDRICH MERK;TELEFONBAU;NORMALZEIT AKT.-GES.
发明人
分类号
H04Q3/42;H04Q3/68
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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