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发明名称
TUBO HELICOIDAL CORRUGADO RESISTENTE A PRESSAO
摘要
申请公布号
BR8906526(A)
申请公布日期
1990.05.15
申请号
BR19898906526
申请日期
1989.12.18
申请人
SHIRO KANAO
发明人
SHIRO KANAO
分类号
F16L9/12;F16L11/11;F16L11/14;F16L11/15;F16L11/16;(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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