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发明名称
Einrichtung zur Einnebelung von Grubenraeumen mit zerstaeubtem Wasser
摘要
申请公布号
DE533458(C)
申请公布日期
1931.09.15
申请号
DED533458D
申请日期
1930.04.18
申请人
EMIL WITTE
发明人
分类号
E21F5/14
主分类号
E21F5/14
代理机构
代理人
主权项
地址
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