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发明名称
Seal ring retaining apparatus
摘要
申请公布号
US3350104(A)
申请公布日期
1967.10.31
申请号
US19650488878
申请日期
1965.09.21
申请人
VENTURA TOOL COMPANY
发明人
HYNES JOSEPH H.
分类号
E21B33/038
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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