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发明名称
PREPARATION OF BLAST HOLES TO RECEIVE AN EXPLOSIVE CHARGE
摘要
申请公布号
CA528012(A)
申请公布日期
1956.07.24
申请号
CAD528012
申请日期
申请人
GALE H. BRAINARD;LESTER P. BARLOW
发明人
LESTER P. BARLOW;GALE H. BRAINARD
分类号
主分类号
代理机构
代理人
主权项
地址
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