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经营范围
发明名称
Welded tubing end construction
摘要
申请公布号
US2669467(A)
申请公布日期
1954.02.16
申请号
US19500153860
申请日期
1950.04.04
申请人
WOLFERZ EDWIN C
发明人
WOLFERZ EDWIN C.
分类号
F16L23/028
主分类号
F16L23/028
代理机构
代理人
主权项
地址
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