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发明名称
Einrichtung an Notruf- oder sonstigen Warnanlagen
摘要
申请公布号
DE902589(C)
申请公布日期
1954.01.25
申请号
DE1951U001432
申请日期
1951.11.30
申请人
FRANZ ULRICH
发明人
ULRICH FRANZ
分类号
H04M11/04
主分类号
H04M11/04
代理机构
代理人
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