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发明名称
Stuffing box
摘要
申请公布号
US2380189(A)
申请公布日期
1945.07.10
申请号
US19410404259
申请日期
1941.07.28
申请人
RATIGAN JAMES P
发明人
RATIGAN JAMES P.
分类号
E21B33/08;F16J15/24
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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