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发明名称
Flanged metal pipe with plastic lining
摘要
申请公布号
US2290333(A)
申请公布日期
1942.07.21
申请号
US19400370442
申请日期
1940.12.17
申请人
AMERICAN HARD RUBBER COMPANY
发明人
JOHNSON RUDOLPH A.
分类号
F16L23/12
主分类号
F16L23/12
代理机构
代理人
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地址
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