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发明名称
Joint
摘要
申请公布号
US2557930(A)
申请公布日期
1951.06.26
申请号
US19470754181
申请日期
1947.06.12
申请人
BARD FRANCIS N
发明人
BARD FRANCIS N.
分类号
F16L27/04;F16L27/073
主分类号
F16L27/04
代理机构
代理人
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