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发明名称
Signalpfeife
摘要
申请公布号
DE593480(C)
申请公布日期
1934.02.28
申请号
DE1933D066272D
申请日期
1933.07.19
申请人
HELMUT DUEKER
发明人
分类号
G10K5/00
主分类号
G10K5/00
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代理人
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