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发明名称
PROCESSO PARA PREPARAR UMA TUBULACAO SUBMARINA
摘要
申请公布号
BR7702720(A)
申请公布日期
1978.01.17
申请号
BR19770002720
申请日期
1977.04.28
申请人
BOC LTD
发明人
LYTHALL D;SMITH C
分类号
B23K9/00;B23K9/028;F16L1/26;(IPC1-7):F16L1/04
主分类号
B23K9/00
代理机构
代理人
主权项
地址
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