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经营范围
发明名称
Well cementing apparatus
摘要
申请公布号
US2310483(A)
申请公布日期
1943.02.09
申请号
US19400321652
申请日期
1940.03.01
申请人
HALLIBURTON OIL WELL CEMENTING COMPANY
发明人
WICKERSHAM NEWTON W.
分类号
E21B33/16
主分类号
E21B33/16
代理机构
代理人
主权项
地址
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