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发明名称
Schaltungsanordnung fuer die Erdschlussueberwachung in Fernmeldeanlagen
摘要
申请公布号
DE1013205(B)
申请公布日期
1957.08.01
申请号
DE1954T009916
申请日期
1954.08.31
申请人
TELEFONBAU UND NORMALZEIT G.M.B.H.
发明人
ACKERMANN FRIEDRICH
分类号
G08B29/06
主分类号
G08B29/06
代理机构
代理人
主权项
地址
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