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发明名称
Seal ring extrusion preventing device
摘要
申请公布号
US3184247(A)
申请公布日期
1965.05.18
申请号
US19620175932
申请日期
1962.02.27
申请人
BAKER OIL TOOLS, INC.
发明人
LEUTWYLER KURT
分类号
F16J15/16
主分类号
F16J15/16
代理机构
代理人
主权项
地址
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