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发明名称
Stuffing box
摘要
申请公布号
US2111733(A)
申请公布日期
1938.03.22
申请号
US19350030437
申请日期
1935.07.09
申请人
SINCLAIR PRAIRIE OIL COMPANY
发明人
RHEES WILLIAM B.
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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