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经营范围
发明名称
Perfectionnements au traitement thermique des métaux
摘要
申请公布号
FR749366(A)
申请公布日期
1933.07.22
申请号
FRD749366
申请日期
1933.01.20
申请人
KABUSHIKI-KAISHA SUMITOMO SEIKO-SHO
发明人
分类号
C21D1/56
主分类号
C21D1/56
代理机构
代理人
主权项
地址
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