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发明名称
Versteifung fuer den eisernen Grubenausbau durch eiserne Bolzen
摘要
申请公布号
DE588868(C)
申请公布日期
1933.12.02
申请号
DE1932SC97513D
申请日期
1932.04.15
申请人
MAX SCHNEIDER
发明人
分类号
E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
地址
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