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发明名称
METHOD AND APPARATUS FOR SUPPORTING MINE BRATTICES
摘要
申请公布号
CA782804(A)
申请公布日期
1968.04.16
申请号
CAD782804
申请日期
申请人
EDWARD M. ASBURY
发明人
EDWARD M. ASBURY
分类号
主分类号
代理机构
代理人
主权项
地址
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