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经营范围
发明名称
Stuffing box
摘要
申请公布号
US1959984(A)
申请公布日期
1934.05.22
申请号
US19330664626
申请日期
1933.04.05
申请人
PHILLIPS PETROLEUM COMPANY
发明人
MILLER ROY HERBERT
分类号
E21B33/08;F16J15/18
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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