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发明名称
TUBO HELICOIDAL CORRUGADO RESISTENTE A PRESSAO
摘要
申请公布号
BR8906799(A)
申请公布日期
1990.05.15
申请号
BR1989PI06799
申请日期
1989.12.22
申请人
SHIRO KANAO
发明人
SHIRO KANAO
分类号
F16L9/12;B32B1/08;B32B15/06;B32B15/08;F16L9/04;F16L11/14;(IPC1-7):F16L9/12
主分类号
F16L9/12
代理机构
代理人
主权项
地址
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