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发明名称
Pipe fitting
摘要
申请公布号
US2280952(A)
申请公布日期
1942.04.28
申请号
US19400364175
申请日期
1940.11.04
申请人
HOFFMANN VICTOR A
发明人
HOFFMANN VICTOR A.
分类号
E03D11/14
主分类号
E03D11/14
代理机构
代理人
主权项
地址
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