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发明名称
Gestaltveraenderungsfaehiger Holzformkoerper fuer den Ausbau von Grubenraeumen
摘要
申请公布号
DE518183(C)
申请公布日期
1931.02.13
申请号
DENDATB140037D
申请日期
申请人
BERGTECHNIK G.M.B.H.
发明人
分类号
E21D11/18
主分类号
E21D11/18
代理机构
代理人
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