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发明名称
Perfectionnements aux éléments de conduite de grands diamètres
摘要
申请公布号
FR768042(A)
申请公布日期
1934.07.30
申请号
FRD768042
申请日期
1934.02.01
申请人
BABCOCK & WILCOX
发明人
分类号
F16L13/02
主分类号
F16L13/02
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代理人
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