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发明名称
échangeur à contact direct
摘要
申请公布号
FR1010551(A)
申请公布日期
1952.06.12
申请号
FRD1010551
申请日期
1948.09.10
申请人
发明人
VICARD PIERRE-GEORGES
分类号
F28C1/04
主分类号
F28C1/04
代理机构
代理人
主权项
地址
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