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经营范围
发明名称
Swing joint
摘要
申请公布号
US2531021(A)
申请公布日期
1950.11.21
申请号
US19470762706
申请日期
1947.07.22
申请人
BARD FRANCIS N
发明人
BARD FRANCIS N.
分类号
F16L27/08
主分类号
F16L27/08
代理机构
代理人
主权项
地址
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