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发明名称
Armature en forme de coquille pour les éléments de soutènement employés dans la construction des galeries de mines
摘要
申请公布号
FR765470(A)
申请公布日期
1934.06.11
申请号
FRD765470
申请日期
1933.12.14
申请人
F. W. MOLL SOHNE
发明人
分类号
E21D11/24
主分类号
E21D11/24
代理机构
代理人
主权项
地址
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