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发明名称
SIGNALPFEIFE, INSBESONDERE FUER GRUBEN, ARBEITSSTAETTEN ODER LUFTSCHUTZZWECKE.
摘要
申请公布号
DE1830344(U)
申请公布日期
1961.04.27
申请号
DE196100H7126U
申请日期
1961.01.28
申请人
DIPL-BERGING. WILHELM HOFFMANN
发明人
DIPL-BERGING. WILHELM HOFFMANN
分类号
主分类号
代理机构
代理人
主权项
地址
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