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发明名称
Improvements in double pipe lines and in methods of assembling them and of using them
摘要
申请公布号
GB990659(A)
申请公布日期
1965.04.28
申请号
GB19630021556
申请日期
1963.05.29
申请人
GERARD FRANCIS WITTGENSTEIN
发明人
分类号
F17D5/04
主分类号
F17D5/04
代理机构
代理人
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