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经营范围
发明名称
Soutènement polygonal ou en arc de cercle pour exploitations minières
摘要
申请公布号
FR66503(E)
申请公布日期
1957.03.22
申请号
FRD66503
申请日期
1948.07.15
申请人
F. W. MOLL SOHNE MASCHINENFABRIK
发明人
分类号
E21D11/24
主分类号
E21D11/24
代理机构
代理人
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