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发明名称
Method and apparatus for fragmentary rocks or rock formations
摘要
申请公布号
GB1018934(A)
申请公布日期
1966.02.02
申请号
GB19620037990
申请日期
1962.10.08
申请人
GENERAL ELECTRIC COMPANY
发明人
分类号
B02C19/18;E21C37/18;F42D1/00;F42D3/04
主分类号
B02C19/18
代理机构
代理人
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