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发明名称
Articulation de chapeau pour soutènement de mines
摘要
申请公布号
FR1232230(A)
申请公布日期
1960.10.06
申请号
FR19590802685
申请日期
1959.08.12
申请人
GUTEHOFFNUNGSHUETTE STERKRADE AKTIENGESELLSCHAFT
发明人
分类号
E21D17/086
主分类号
E21D17/086
代理机构
代理人
主权项
地址
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