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发明名称
SPIRAL OIL WELL CEMENTING TOOL
摘要
申请公布号
CA693328(A)
申请公布日期
1964.08.25
申请号
CAD693328
申请日期
申请人
B AND W INCORPORATED
发明人
JAMES R. SOLUM;WILLIAM C. HEMPEL
分类号
主分类号
代理机构
代理人
主权项
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