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发明名称
CLEANOUT APPARATUS FOR DRILL LINES
摘要
申请公布号
CA500233(A)
申请公布日期
1954.02.23
申请号
CAD500233
申请日期
申请人
AUGUST R. KURTZ;MYRTLE DOHN;CLARENCE J. BROWN;VIRGIL MILNER
发明人
CLARENCE J. BROWN;FLOYD S. BROWN
分类号
主分类号
代理机构
代理人
主权项
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