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发明名称
Perfectionnement aux échangeurs de température
摘要
申请公布号
FR1027030(A)
申请公布日期
1953.05.06
申请号
FRD1027030
申请日期
1950.10.31
申请人
发明人
VELUT RENE
分类号
F28F3/04
主分类号
F28F3/04
代理机构
代理人
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