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经营范围
发明名称
Circumferentially tightening packing ring
摘要
申请公布号
US2258576(A)
申请公布日期
1941.10.07
申请号
US19380185614
申请日期
1938.01.18
申请人
TAGE MADSEN
发明人
MADSEN TAGE
分类号
F16J9/16
主分类号
F16J9/16
代理机构
代理人
主权项
地址
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