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经营范围
发明名称
Fonds de convertisseurs, et leur procédé de fabrication
摘要
申请公布号
FR1187473(A)
申请公布日期
1959.09.11
申请号
FRD1187473
申请日期
1957.12.04
申请人
发明人
CRESPI GIOVANNI
分类号
C21C5/48
主分类号
C21C5/48
代理机构
代理人
主权项
地址
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