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经营范围
发明名称
Grubenausbauelement
摘要
申请公布号
DE647995(C)
申请公布日期
1937.07.19
申请号
DE1933ST51943D
申请日期
1933.02.24
申请人
WALDEMAR STABENOW
发明人
分类号
E21D15/24
主分类号
E21D15/24
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代理人
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